center image preview with lightbox and caption

I just wanted a thumbnail or preview of the image, where if clicked it would load into a lightbox, but the preview just shows the center of whatever image is added to it.  Note: I just picked ra..

add new random image with button

this appends a new random image from picsum.photos to the div with the id app

simple javascript no library accordion

a simple button and div based accordion with a toggled indicator

Sweet Alert 2 Methods and Examples

I love this alert replacement so i thought i would just add some of the examples here to show how awesome it is! You can check out the official sweet alert documents here if you want to browse throug..

Using CSS Grid instead of Float's for a 3 column simple list

I have been in the habit of just using float:left and then width 31% with margin 1% for list items, and it seems to work fine usually.  But i thought i probably should update the defaults in by ..

Slick Slider Carousel with Custom Next and Prev Buttons

I had a slider the other day where i needed to attach some detached buttons, so added the following click events to control the next and previous events on the slider.  Note the class names: sli..

Using props with Stateless Functional Components in React

Here is an example of a Stateless Functional Component but i cant get the PropTypes working correctly in my demo, not sure what im doing wrong here, but the code seems to work in the compiler just not..

How to Access Props Using this.props in React

If you would like to access a class component prop within its self you can do this using the this keyword.

How to Use PropTypes to Define Props in React

React allows you to define the types of props given to your components to make sure that invalid data is not sent as the prop to the element.  To do this you can define propTypes. You can defin..

How to Override Default Props in React

The following code explains how you can override the default props in react.  In this example the default of quantity is set to 0, so we can pass in quantity in the items to override its default..

log the console log output to a div

I do a lot of console logging so i thought it would be nice to be able to see this on my test pages. Apparently you can grab this quite easily with the following code.  I had to modify this a b..

How to use default props in React

If you dont want to specify props every time you use an element, you can also specify defaults for these items. This can also be useful to remember which props are needed per component. This can be a..

How to Pass an Array as Props in React

If you need to pass larger amounts of information to a component you can pass in an array rather than just a single variable. More information on the join method on the array can be found here. Here..

show the current date in javascript

Returns the current date and time and sets the value in a div.  Also added a demo with setinterval to update the time and date in the div every second. 

How to Pass Props to a Stateless Functional Component in React

Props are like properties that you can pass into a component in react. A prop would be something like this in your component.  JSX <div>  <MyProp id="1234" /></div> The..

How to Write a React Component from Scratch

Just testing my react component writing skills...

How to Render a React Class Component to the DOM

This shows how you can get react to render a component into the page or DOM. So actually getting and showing the code that you have been writing in react. 

get element by id and hide it

This example gets an element by its id and hides it by setting the css style value to display none 

get element by id with javascript

gets an element using its id using javascript

set a cookie on click and then check if the cookie is set and dont show that message again

this script shows a message, and if the message is closed it will set a cookie to not show that message again for 1 day.  The cookie in this example is set to expire in a day, so then if you com..

How to Compose React Components in React

In this code we nest the components NonCitrus and Citrus into the Fruits Component. Then nest the Fruits within the TypesOfFood component.  Also added the additional components, Vegetables, Non..

Changing the default hero image based on the category name [not yet done]

This is more of a todo item, at the moment the hero image uses the same image for every post unless a hero is specified for each, i would also like to set the default image per category so if the post..

How to Use React to Render Nested Components

It can be useful to take components and render them inside other components while still making them into seperate items. This shows how you can take each component and nest it within another one and ..

How to Create a Component with Composition in React

This shows how you can compose multiple React components together. In this example we return the parent component which has within it the child component, you can add as many child components as requ..

How to Create a React Component using the ES6 class method

One way to add a react component is to use the Stateless Functional Component method, and another way is to use the ES6 extends syntax. This method seems more complex than the 1st for some reason mayb..

foundation base html template - foundation template

just a basic html template with foundation and the required javascripts, good for a starter html page using foundation framework.

What is a Stateless Functional Component in React

What is a Stateless Functional Component? A stateless component is one that can recive data and render it, but it does not manage the provided data or track changes to it.  This method creates ..

How do Self-Closing JSX Tags Work?

So in JSX all the tags must be closed, other wise it can break the element. for example: <div> must have a closing </div> and also for elements like <br> and <hr> must include..

How to Define a HTML Class in JSX in React

When writing JSX you cant add classes like you would in HTML so this code would not work: JSX <div class="my-class"></div> Instead we have to use className. JSX uses camel case for a l..

How to Render HTML Elements to the DOM with React

Once you have a JSX element defined you can write it to the page with ReactDOM.render(componentToRender, targetNode),  In this example we are targeting the div with the id challenge-node. JSX ..

How to Add Comments in JSX

To put comments inside JSX, you use the syntax {/* */} to wrap around the comment text. You do actually need the curley brackets, and have to add it under the other elements for this to wor..

Create a Complex JSX Element

JSX must return a single element, so you must wrap your items in a div element you cant just return a bunch of p tags.  Define a new constant JSX that renders a div which con..

Create a Simple JSX Element

The current code uses JSX to assign a div element to the constant JSX. Replace the div with an h1 element and add the text Hello JSX! inside it.

adding react with JSX using babel

just wanted to see how JSX would work with react and babel, so this way you can write JSX and babel compiles it for use with react.  This is apparently not a good way to do things and can be qui..

adding react to a website in 3 steps

i was just researching how to add react to a website, and i thought i would need babel to translate or compile the JSX code, but apparently you do not need this...  So ill test this here and see..

using babel for react compiling in browser

this is currently just an idea, as i saw that codepen uses babel to run react i was wondering i can do the same thing here and then just write normal react script and have babel compile it.  so ..

react hello world with time and date updating

here is a react hello world with the date and time updating on setInterval 1000 miliseconds.  Again with react it has to be compiled from JSX for it to work, so i have included the original and ..

react hello world with variable name

i was just testing some of the hello world examples on the react site, and as they use JSX they cant be directly entered into your code, so you need to run a pre compiler (not sure of the exact term f..

react basic hello world

the most basic hello world using react js

Idea: Google Font Dropdown Selector Code

just an idea at the moment, a dropdown list of google fonts and when selected it loads that selected font using the @import css tag.  Loading the fonts Gist : not tested https://gist.github.com..

document placeholder for a4 in portrait

a nice document placeholder image with dropshadow and transparency

landscape image document placeholder

A nice landscape image of a blank presentation format, in landscape mode with drop shadow.

video not auto playing issue in chrome and brave

i had this error the other day when i was adding an auto play video to a page. the error was: Javascript Uncaught (in promise) DOMException: play() failed because the user didn't interact with the ..

change the box-shadow of an element with javascript boxShadow

changes the box shadow of test_div using the javascript object(?) boxShadow

change the background color of an element with javascript

gets the element by its id and changes the background color style css value the following example: gets the element by its id "my_bg" changes the style.backgroundColor to #123456

change the border radius of an element with javascript only

change padding of element with javascript

change the padding of an element with javascript only

get the value from a range input field with javascript

this script will retrieve the current value from a range slider html input if you want the value to only update when the slider interaction has been stopped change the oninput to onchange then it w..

twitter json feed testing

just testing using the Twitter Post Fetcher script, seems to be working well.

function to load one latest item with a start val load_latest_single_num

This is the same as load oldest item based on insdate then update the insdate to now - load_latest_single_update but it allows you to add a start number to the range, so allows you to access the 2nd, ..

make the view number zoom when mouse over or active

Lets make the view number in the header widget area a bit more exciting... Zoom on mouse over with css.  Lets add this effect here: Using Transform Scale In Css To Zoom On Hover Over Simpl..

moving the hits widget into the post header and footer

I wanted to make a smaller deal of the views page widget, i was adding it as a full widget and it does not need to be that huge so moving from widget area to the top of the post.  Move it down..

simulate a click on an element with jquery

you can actually use jquery to simulate a click event using the following .click() so as soon as the document is ready and you have jquery loaded it will run the click event for you, and should pop ..

center mode slick zoom testing

update : this is a tricky one to get working! I have done a lot of testing on this one, and got a demo working from a combination of the following links. the demo is still not 100% styled, but its..

gallery carousel center mode

i found this one here, looks cool. see if i can get it working like the demo.  currently getting this error on running the script i wonder if this is caused by a document ready issue? what is..

add some foundation tabs working example

they show the tabs here on the example page, but there is no full working code... for some reason. So i thought i would add one here. Hmm foundation makes this site look weird, and very bright! :P ..

old browser check with javascript

modified from this script i console logged all the items available so you can do what you need with them these are the avilable variables Javascript console.log(browser.agent);console.log(browser...

append a #link to the end of all href urls on a target

good for if you need to append target links with a # link

verify the google recapture server php

i was still getting quite a bit of spam even after using google recapture v2 and i think this is just as i was using the javascript only version, which disables the submit button if the capture is not..

scroll down the page using a button click

scrolling down 600px from where you currently are on the screen demo vid

using clamp js to clamp lines of text

there is a css version of this as well but this version works in a greater range of browsers (i think) this one is not working for me... i think the overflow elipsis is still a better option than thi..

Scroll down indicator css javascript and html

I have seen these a couple of times, indictating to the user that there is further content down the page, and they should scroll to view it. Then as you scroll down the indicator dissapears. So we w..

check if a ul contains a ul li

i could not find a way to do this with just raw css so i had to use jquery /sad

for auto filled fields, need to change the text and background colours

for some reason bootstrap or the browser is doing this to auto filled fields.  according to my searching there is a pseudo class added to auto filled fields CSS input:-webkit-autofill { col..

use a list group for listing by category page [todo]

change this to a list group, should make it neater. Page to update: https://kruxor.com/list-category/code/  so for some reason this is listed using this function PHP $list_wiki_menu = $clas..

jquery check if a sub element exists

this can be done with .length

Comments Listing should be a custom list rather than using search

For some reason when i listed the comments under posts on this site, i used the search function and then searched for the related uid, which maybe was easier at the time than adding an additional cate..

ajax callback to delete with sweet alert confirmation to make it cool! 😎

I recently wanted to to an ajax call back on a list of items just to make it easier to move around the place, rather than it reloading the page every time. So i thought why not also use sweet alert on..

load the latest single item only

this function loads the lastest item from the selected class

load oldest item based on insdate then update the insdate to now - load_latest_single_update

i keep finding these functions that i wrote ages ago and forgot about so ill list them here so maybe i can remember them. I think this one was to loop through items, so it grabs the oldest item and t..

change this to a list group - other items

Other item format is a bit average, list group should fix this.  This uses the template: core-list-item-simple.html  So we can change this a bit to the list group format.  Which i..

hero widget header - creates a nice looking hero item from a target uid and class

this creates a "nice" looking hero widget, just wanted to create something that looked decent and had an attached background image, surprizingly annoying to link items together. For some reason i kee..

dropdown section

What generates the dropdown widget items? generated by the function generate_section_button() per class template file section-dropdown-bootstrap.html  

Latest from Code Widget

What generates the Latest from Code Widget? Code PHP $widget_latest_list = $class->list_all(        $start = 0,        $max = 10,      &n..

prevent default click event on link

This will prevent the default event on a link url, so for example if you have a <a href="">link</a> link this code will prevent it from loading the href link when clicked and you can do so..

json load from jquery and loop through the results

this is the same as this post but i have added the object to an external test file. so rather than already having the object data on the page we have to load it somehow Note: you can test that the o..

set active class based on url value

this will check the full url and then loop through all the a elements in #test-div when it finds a matching url it will add the class active to that button this is good for persisting active links o..

foundation accordion for version 6.x

yep the foundation does weird things to this sites css, but the demo still works if you want to use the built in foundation accordions. 

fancybox image popout easy

just in case you want to easily apply a modal or pop out effect to your images when they cant be displayed full size on the page.  related: https://kruxor.com/view/code/3gNUD/inline-fancybox-m..

check box highlight text area css

i just wanted to be able to highlight a text field if a certain check box was checked on a form in this demo below, if you click on the check1 checkbox it will give you an alert saying if the box is ..

validate an email address from a form field - version 2

This javascript function will check if the email address in the text box has an @ and a . in it and return a message saying if its valid or not.  This is pretty basic as it only includes checkin..

check if a checkbox is checked with javascript

checks if the box is checked and returns true or false reusable function that can check if a checkbox is checked or not just pass it the id of the checkbox Javascript Usage check_my_box('check1');

submit a form with javascript onclick

submit a form with javascript, good if you want to submit a form with a button that is not within that form. the form will require an id

Slick Slider Carousel with Fade Transition

here is a working example of slick carousel with a fade transition between elements rather than a slide transition

add a toast alert when logging in with half moon

example of adding a document dom ready wait and then the script that launches a new toast message just adapting a php cms using halfmoon as the ui, its quite nice.  a bit bright in non dark mod..

css double page document preview with shadow

two div elements that look like blank documents with drop shadows

page scroll indicator research

I was wondering the other day how they do those page scroll indicators, i saw one when viewing this site: https://blog.wolfram.com/2021/03/24/the-solution-of-the-zodiac-killers-340-character-cipher..

replacement slider for ken wheeler's slick carousel tiny slider 2 [testing]

I have been looking for a little while for a replacement for the now classic and a bit depreciated, ken wheeler's slick carousel. After a bit of looking around i think the best replacement, is a non ..

change a select box back to its initial select value

this will reset the select box selected value back to the 1st item in its options list

select onchange

select onchange run a function this will run the check_years function when the select value is changed

add years as options to select dropdown

add the years as dropdown items between a range of years with javascript document ready js only version

add click event to multiple link items and load the link content into a target div ajax

this will get a group of links with existing href targets and load them dynamically with an ajax callback you will need to also include the full jquery script as the slim one does not include the aja..

add click event to multiple link items

this allows you to get every a element in a-div class and stop the link from loading, so you can do other things with it like run a function or something else Functions used: Javascript Wait for th..

set the html of an element javascript

this will set the innerhtml value of an element

get the value of an input form element (input value)

add how to get the value of an input form element with javascript for some reason i can get this working with: Javascript console.log(document.getElementById("my_input").value); but when trying to..

minutes to decimal calculator javascript version

trying to do a more simple version of this post. https://kruxor.com/view/code/NIjAQ/quick-tool-to-convert-time-into-decimal/  the php version requires post back to the server, so i think this c..

check if a certain query string is set then apply it to all url's on the page

this script will check if a query string is already set, and if it matches it will append the same query string to all url's on the page Here is the test link with the field, and all url's on this pa..

append a query string to all url's on a page

this should append the query string test=1 to all url's on this page. if it works... make sure its added to document ready.

linux list all drives and partitions

the following command will list all drives and partitions in your shell BASH sudo lsblk -o UUID,NAME,FSTYPE,SIZE,MOUNTPOINT,LABEL,MODEL It should look something like this depending on your drive se..

slick carousel jump to a slide on element hover

jumps to a specific slider on hover over on an element this is working now, here is the example, mouse over the buttons to see the slide change. trying to add this: Javascript $( selector ).mous..

Adding HTML Templates into TinyMCE Editor

This can be very useful if you are using the tinymce editor on your site and want to be able to add simple or complex html templates. Here is how to do it: Add this to your tinymce init Javascrip..

How to set a cookie and expire it in 30 days

Here is some basic usage for the js cookie library. Include the following script. Or you can grab the latest version at the cdnjs website. HTML <script src="https://cdnjs.cloudflare.com/ajax/lib..

codemirror htmlmixed textarea

a working (hopefully) version of codemirror using the htmlmixed mode, not sure why its not doing code highlighting.

install codemirror for textareas [added]

i think rather than editing all the code using just a plain textarea element it might be nice to have codemirror format them nicer https://stackoverflow.com/questions/21085170/codemirror-how-to-insta..

darkmode toggle switch with local storage to remember the last selection

Here is a darkmode toggle switch, that swaps out the body class so you can target dark-mode or light-mode on all your elements! It saves to local storage the last selection so if you come back to the..

animate and zoom six elements on a timer [addClass, removeClass, setTimeout]

set of six elements that i wanted to highlight using a simple setTimeout and the addClass and removeClass  this also involves some css changes to get this working i would also like in the fut..

checking the current url and then marking a link active based on that url

i want a script that can check the current page uri and then match it to a list of links to be able to add an active class that survives page reloading So here we go... 1. Get the current page url. ..

set maxHeight of element by id with javascript

sets the max height value of an element with javascript demo pending

top bar overflow issues [fixed]

So i was just browsing throught the site checking for random errors, which there are quite a lot. And noticed this one. Quite a large bug caused by overflow issues in the main header, i think this ..

test page for the custom css 12 grid used on this site

This is my testing page for the grid used on this site, it shows elements and other things for use on the grid and other general formatting.

add a jquery date picker to your text box

This JQuery UI Date picker is good if you want to add a nice dropdown date selector to your input box, rather than having to type in the date manually. Requires: JQuery  JQuery UI Documen..

replicating the bootstrap dropdown toggle in jquery

here is a code that can toggle a sub element using the same format as bootstrap. Update: also added another line that closes all the open menu's when one is clicked, so that you dont have a bunch of ..

Modern HTML5 Techniques for changing classes

vimeo thumbnail generator

play a sound every # of seconds

This plays a beep sound every # of seconds, to stop it just reload the page 4 Minutes is 240 4.5 Minutes is 270 5 Minutes is 300

using jquery appear for checking if an element is visible on screen

Yes.. sometimes i like using jquery as well, as it can make things so easy! :) Here is a quick demo using the JQuery Appear plugin so make an element change if it on or off screen.  Plugin Link..

Monitoring Visible Objects on Screen

i found this one when researching how to detect visible objects on screen, and then doing something with them. This one does not use any external scripts to change the box colour as it becomes visible..

how to install js socials for social media share buttons and make them rounded

This should be a nice quick one on how to install js socials which add social media sharing buttons on your pages.  Yeah i always just ignore these as well, but hey some people may use them?? H..

country select javascript check which option is selected and show a hidden element

this shows a country dropdown and then if a selected country name is matched it will show the second part of the form for this test australia is the confirmed country

country select javascript check which option is selected

this is an example of how you can get the selected country value with javascript from a html countries dropdown

What is Core?

17 Aug 20 core is php content management system where the content is editable from the front end of the site, so there is no real back end to this system. i designed it to be easily extended so every..

Custom JS Tabs - No Jquery or Jquery UI

add a class or remove it based on window scroll location

if you inspect the header div you will see a class added to it when scrolled down, i have added additional margins to it so you can still see it even when scrolled. then you add a fixed property to m..

get element by class name with javascript and change it function

You may have seen the get element by id in javascript, which is great when there is only one element but what if you need to get the element using its class name The issue with classes is that they c..

hide parts of a form until the 1st item is selected

this code can be used when you just want to show the 1st field on a form then when it is selected it shows the rest of the form elements

inline fancybox modal testing

just testing to see if i can get a fancybox popup loading using an inline script rather than a document ready one, might be easier to implement. similar to this one, but without the need for documen..

fancybox modal popup example

an example showing fancybox text modal window attached to a button to open it

matches the url and does something if it matches a certain string

force existing link to open in a new window with javascript

here is some javascript that grabs an existing link and then forces it to open in a new tab when clicked.

Get the documentURI with JS

This function gets the current document URI assigns it to the variable documentURI so it can be reused and shows it in the result area once you click on run function.

jquery document ready with foundation init as well

here is a jquery document ready that also loads the foundation js library. im not sure if the document foundation needs to be loaded in the document ready, but this way seems to work.

document ready javascript standalone version no jquery

this is a version of a dom ready or document ready that does not require jquery

add a class to a div with an id javascript

a one liner to add a class name to an element with a specific id, for this to run it seems to need a document ready.

jquery click function

Bind something to a click event on an element using jquery. Needs to be combined with a document ready.

Change link target with JQuery

this will change the link href target to # on document load rather than its original link

hide and show elements with js using getElementById and style.display

Get the document root path in php $_SERVER['DOCUMENT_ROOT']

I ususally use this one if i am linking to files in the server document root folder rather than specifying ../directory/include.file.php i will use something like this:  $document_root = $_..

get text between tags

Using DOMDocument you can get strings between tags Useful if you are processing raw html files with php function getTextBetweenTags($string, $tagname){ $d = new DOMDocument(); $d->load..

convert all images into base64 encoded

if you have a bunch of html with inline image links this will convert them into base64 images inline. <?php $html = "my html string with multiple image tags..."; $dom = new DOMD..

google map with overlay data

Ever wanted to add a really slightly complex google map to your site? Working Example /* Always set the map height explicitly to define the size of the div * element that con..

detect window scroll position jquery

This one adds or removes a class if the document is scrolled 50 px near the top of the window. $(window).scroll(function() { if ($(document).scrollTop() > 50) { $('nav').addClass('shrink');..

change the window title

 This is a pretty easy one liner But we can make it a bit more complex with jquery and add a counter It is questionable that crawlers and bots will see this so may be bad for SEO. document.t..

Slick Slider Carousel

Edit: Sorry this page was broken for a bit, its fixed now with working examples! 😛 Nice and simple slider / carousel

change favicon with jquery

Updated: This seems to not work on this page, as it has multiple link icon elements to deal with different sizes. I just changed it to a function and it runs ok, but the browser seems to choose a diff..

validate form data using javascript to check required html elements

for use in a javascript function to submit a form var form = document.getElementById('myForm'); for(var i=0; i < form.elements.length; i++){ if(form.elements[i].value === '' && form.elements[i..

do something later with settimeout or loop with setinterval

setTimeout This one will run a certain time after the document loads. So if i want to execute something 5 seconds (or so) after the page loads i would do this. You will need to check your console..

document ready wordpress jquery

Wordpress uses JQuery rather than $ to initialize so here is a workaround that allows you to still use the $ to access JQuery functions. Just incase your normal document ready is not working.

testing chartjs

Update: 30 June 2020 I checked this code, and it was broken all fixed now. The issue with the demo included on the main site is that it was trying to run the chart js before the chart library was load..

random string generator guid

a nice easy one to generate a random string. i use this one to stop items from caching or you could use it as a guid. var nocache = Math.random().toString(36).substring(2, 15) + Math.random().toStr..

using regex with replace to replace all instances of something in a string

so you have a string and you want to replace a recurring character, use this to do it: String Example: var string = "a-string-with-dashes.txt"; var string = "a-string-with-dashes.txt"; string..

digital clock with jquery

Just a simple digital jquery clock that updates every second. Also added the dropshadow animation, not sure why... ;) .digital-clock { font-size:80px; } .transition { transition..

show the year with js

just a simple one liner that will show the current year, so no more need for static years in html footers! var d = new Date(); document.getElementById("year").innerHTML = d.getFullYear(); Usage E..

fancybox youtube showing video links in a lightbox

do people still use lightboxes, it seems yes in some cases. ;) if you feel the urge to use lightboxes and need to link to some youtube videos this is how you can do it. you will need jquery and fan..

preserve tabs in textarea when tab key is pressed

If you want to have the text tabbed when pressing tab in textareas rather than it switching fields. $(document).delegate('textarea', 'keydown', function(e) { var keyCode = e.keyCode || e.which;..

using getElementById and innerHTML to change the html of content no jquery

this is pretty simple, but i always forget it so ill add it here document.getElementById("theid").innerHTML = "the new content"; heres how it works, add a div with an id of theid Example .. <d..

make clickable element with clickable class

makes an element with a link into a clickable element

jquery document ready

The most used script in jquery, loads things after the document is ready. $(document).ready(function(){ // do some stuff });

emoji data

Emoji Data version 1.0 This is a better emoji list that you can search by title ctrl + f emoji-data.txt # Emoji Data for UTR #51 # # File: emoji-data.txt # Version: 1.0 # Date: ..

video embed no controls

embed a video, for use as a background or a slide element, or wherever you need a large video. I found that there was a bug in chrome (which is probably fixed now) that was ignoring the autoplay tag ..