useful Jquery

A collection of useful jquery snippets.

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Useful Jquery

Examples

Animate Background Color

Animates the Background Color of the Element with class .colorAnimate.

Usage:

  <html>
  <head>
  <style type="text/css">
    .colorAnimate{
      width: 100%;
      height: 100%;
      overflow: hidden;
      background-color: white;
    }
  </style>
  <script src="./animateBGColor.js"></script>
  </head>
  <body class="colorAnimate">
  </body>
  </html>

Back To Top Button

This jQuery snippet allows you to scroll to the top of the page when clicking on the element with a class of .backToTop.

Usage:

<head>
  <script src="./backToTop.js" type="text/javascript"></script>
</head>
<body>
	<div class="backToTop"></div>
</body>

Bootstrap Nav Highlight

This jQuery snippet allows you to highlight the active element in a nav bar by using a ul with a class of .nav.

Usage:

<head>
  <script src="./bootstrapNavHighlightActive.js" type="text/javascript"></script>
</head>
<body>
  <ul class="nav">
    <li><a href="/home">Home</a></li>
    <li><a href="/about">About</a></li>
  </ul>
</body>

Canvas to Blob

This jQuery snippet is a polyfill for the standard JavaScript canvas.toBlob method. It can be used to create Blob objects from an HTML canvas element..

Usage:

<head>
  <script src="./canvas-to-blob.js" type="text/javascript"></script>
</head>
<body>
  <script type="text/javascript">
	var canvas = document.createElement('canvas');
	/* ... your canvas manipulations ... */
	if (canvas.toBlob) {
		canvas.toBlob(
			function (blob) {
				// Do something with the blob object,
				// e.g. creating a multipart form for file uploads:
				var formData = new FormData();
				formData.append('file', blob, fileName);
				/* ... */
			},
			'image/jpeg'
		);
	}
  </script>
</body>

Copy To Clipboard

This jQuery snippet can be used to copy contents of an element to the clipboard.

Usage:

<head>
</head>
<body>
  <p id="copyTarget">I am the Copy Target</p>
  <button id="copyButton">Click To Copy</button>
  <script src="./copyToClipboard.js" type="text/javascript"></script>
</body>
</html>

Disable Links

This jQuery snippet allows you to disable any links that have the .disabled-link class.

Usage:

<head>
  <script src="./disableLinks.js" type="text/javascript"></script>
</head>
<body>
    <a href="disableLinks.js">Normal</a>
    <a href="disableLinks.js" class="disabled-link">Disabled</a>
</body>

Easy Toggle Checkboxes

Allows you to easily toggle checkboxes using 2 classes. Example JSFiddle

.checkAll is used for the toggle. This can be a button or an a element. .all-checkable is used for the checkboxes that can be toggled by it.

Usage:

<head>
  <script src="./easyToggleCheckboxes.js" type="text/javascript"></script>
</head>
<body>
    <ul class="no-dot">
      <li>
        <label for="known">
          <input id="known" class="all-checkable" type="checkbox" name="checked[]" /> Known</label>
      </li>
      <li>
        <label for="unsure">
          <input id="unsure" class="all-checkable" type="checkbox" name="checked[]" /> Unsure</label>
      </li>
      <li>
        <label for="unknown">
          <input id="unknown" class="all-checkable" type="checkbox" name="checked[]" /> Unknown</label>
      </li>
    </ul>
    <button type="button" class="checkAll">Check All</button>
    <script type="text/javascript">
    var none_checked = true;
    $('.checkAll').click(function() {
      if (none_checked) {
        $('input.all-checkable').prop('checked', 'checked');
        none_checked = false;
      } else {
        $('input.all-checkable').prop('checked', false);
        none_checked = true;
      }
    });
    </script>
</body>

This jQuery snippet allows you to easily create DOM nodes by passing parameters to the jQuery-call. The snippet below will create a in-memory node, it's HTML will be <div id="divID" class="class-1 class-2" foo="bar"></div>.

Usage:

$("<div/>", {
  id: "divID",
  class: "class-1 class-2",
  foo: "bar"
});

Because of jQuery's fluent pattern you can call every jQuery method on that node like this:

$("<p/>", {
  id: "testP",
  text: "Click me to change colour"
}).on("click", function() {
  $(this).css("color", "#" + Math.random().toString(16).slice(2, 8));
});

New Window

This jQuery snippet allows you to force all external links to open in a new tab using _blank for the target attribute.

Usage:

<head>
  <script src="./linksToNewWindow.js" type="text/javascript"></script>
</head>
<body>
    <a href="linksToNewWindow.js">This link will open in the same tab.</a>
    <a href="https://external-link.com/">This link will be forced to open in a new tab.</a>
</body>

Micro Side Bar

This jQuery snippet allows you to quickly create a micro side bar with 2 different classes. .sidebarToggle for the toggle bar, and .sidebar for the sidebar area. https://jsfiddle.net/PXgamer/te3hqgm5/

Usage:

<head>
  <script src="./microSideBar.js" type="text/javascript"></script>
</head>
<body>
	<div class="ui sidebar">
	  <div class="pull-left" style="display: inline-block; min-width: 183px; min-height: 165px; height: 100%;">
		<strong class="list-group-item">Required Links</strong>
		<a href="https://github.com/PXgamer" class="list-group-item" target="_blank">GitHub</a>
		<a href="https://code.jquery.com" class="list-group-item" target="_blank">jQuery</a>
		<a href="https://getbootstrap.com/getting-started/" class="list-group-item" target="_blank">Bootstrap</a>
	  </div>
	  <div class="pull-right" style="display: inline-block; margin-left: 2px;">
		<a class="btn btn-xs btn-default sidebarToggle" style="min-height: 165px;"><span class="glyphicon glyphicon-chevron-right"></span></a>
	  </div>
	</div>
	<div>
		<!-- Other Content -->
	</div>
</body>

Nodes Analyser

This jQuery snippet allows you to analyse some useful DOM information including the depth of the deepest node, the number of nodes on the page, and adds a shadow around all DOM Nodes.

Usage:

<head>
  <script src="./nodesAnalyser.js" type="text/javascript"></script>
</head>
<body>
    <script type="text/javascript">
		walk($(document.body), 0);
	</script>
</body>

Smooth Scroll

This jQuery snippet allows you to scroll to any id on the page by clicking a nav item link with a selector of .nav a. The a tag must use a href pointing to an id (i.e. <a href="#examples">Examples</a>).

Usage:

<head>
  <script src="./smoothScroll.js" type="text/javascript"></script>
</head>
<body>
  <ul>
    <li class="nav"><a href="#home">Home</a></li>
    <li class="nav"><a href="#about">About</a></li>
  </ul>
  <div id="Home"></div>
  <div id="About"></div>
</body>

Tooltip

This jQuery snippet allows you to add a fading tooltip to any element with the class .element-with-tooltip.

Usage:

<head>
  <script src="./tooltip.js" type="text/javascript"></script>
</head>
<body>
  <span class="element-with-tooltip" data-tooltip="TEST TIP">Testing</span>
</body>

US State Select Populator

This jQuery snippet allows you to automatically fill a select element with dropdown items of US states. Uses the 2-digit state code as the value, and displays the full state name as the displayed text.

Usage:

<head>
  <script src="./stateDropdownPopulator.js" type="text/javascript"></script>
</head>
<body>
	<select id="stateDropDown"></select>
</body>

Swap img tags with inline svg

Jquery plugin to Swap Images with svg src with inline svg Elements.

The Problem.

If you've ever used svg icons, you would have added it as an source, like so.

<img src="circle.svg" />

this takes away all the editability of the svg. you cannot use css selectors, etc.

The solution

the plugin swaps this

<img class="swap-svg" id="myid" src="circle.svg" />

<svg class="swap-svg" id="myid" xmlns="http://www.w3.org/2000/svg" version="1.1" xmlns:xlink="http://www.w3.org/1999/xlink" preserveAspectRatio="none" x="0px" y="0px" width="330px" height="400px" viewBox="0 0 330 400">
......
</svg>

now you can use your css selector to change colors, etc.

Usage.

Add the scripts.

<script src="bower_components/jquery/dist/jquery.min.js" charset="utf-8"></script>
<script src="swap-svg.js" charset="utf-8"></script>

Add a class to the images you wanna swap

<img class="swap-svg" id="myid" src="circle.svg" />
<swap class="swap-svg" src="BatmanHat.svg"></swap>

yes, it works on any tag as long as it as a src attribute with svg file source.

initiate the plugin.

$('img.swap-svg').swapSvg();

its important that you select a image tag with a class of swap-svg

Table Stripes

This jQuery snippet adds alternating colors on each row of a table to enhance readability.

Font Change

This function adjusts the font size of a given element in increments of 3px. The font size may be made either smaller or larger.

Usage:

Making an element with id 'example' smaller by 3px:

font_change($('#example'), 'smaller');

Making an element smaller when clicking it...

$('#smaller').click(function(){
	font_change($('p'),'smaller');
});

... or larger:

$('#larger').click(function(){
	font_change($('p'),'larger');
});

Usage:

Making an element with id 'example' smaller by 3px:

font_change($('#example'), 'smaller');

Making an element smaller when clicking it...

$('#smaller').click(function(){
	font_change($('p'),'smaller');
});

... or larger:

$('#larger').click(function(){
	font_change($('p'),'larger');
});
=======
*Usage:*
```html
<head>
  <script src="./tableStripes.js" type="text/javascript"></script>
</head>
<body>
  <!-- Add a table, you're done! -->
</body>

Check IE Version

This jQuery snippet allows you to check the version of IE the user is running. It returns a Number as the version of IE.

Usage:

<head>
  <script src="./checkIEVersion.js" type="text/javascript"></script>
</head>
<body>
  <script type="text/javascript">
		var IEVersion = checkIEVersion();
    if (IEVersion) {
      alert("You are running Internet Explorer version: " + IEVersion);
    }
	</script>
</body>

Load content on scroll

Usage:

<head>
  <script src="./loadContentOnScroll.js" type="text/javascript"></script>
</head>
<body>
  <!-- Add your first page content -->
  <div class="content"></div>
  <!-- Add loading image of your choice -->
  <div id="loadingbar"><img src="http://loading.io/assets/img/hourglass.svg"></div>
  <!-- Place loaded_max div -->
  <div id="loaded_max"></div>
</body>

Add some style

#loadingbar{
	display: none;
	position: fixed;
	left: 50%;
	top: 40%;
	}

Get jQuery Version

Gets the jQuery version number as a string from the referenced jQuery prototype's 'jquery' property.

Usage:

console.log($.fn.jquery);

//Outputs a version number to the web console, like "3.1.1"

Slider jQuery

Create slider with jQuery and CSS

Usage:

<head>
<style>

body { margin:10px auto; text-align:center; }
.content { max-width:800px;text-align:left; margin:auto; }

.simple-ss {
  width:800px;
  height:250px;
  background-color:red;
  margin:auto;
  background-image:url("http://www.mediafire.com/convkey/4989/2l919s6cqg2vm826g.jpg");
  background-position:0;
  background-repeat:no-repeat;
  background-size:cover;

  animation-name: slide;
  animation-duration: 13s;
  animation-direction: normal;
  animation-timing-function: ease;
  animation-iteration-count: infinite;
}

@keyframes slide {
  0% {background-position:0 0;}
  16.66% {background-position:0 0;}
  33.32% {background-position:-800px 0;}
  49.98% {background-position:-800px 0;}
  66.64% {background-position:-1600px 0;}
  83.30% {background-position:-1600px 0;}
  100% {background-position:0 0;}
}
</style>
  <script src="./sliderjQuery.js" type="text/javascript"></script>
</head>

<div class="simple-ss" id="simple-ss"></div>
<div class="content"></div>

### <a href="styleSheetAnalyser"></a> [**Stylesheet Analyser**](styleSheetAnalyser)

Walk through all document.styleSheets

- get all the rules with `getRules`
- get all rules matching a string (regex supported)
- get all rules matching for a DOMNode

*Usage:*

```javascript
// get all stylesheet rules
getRules();

// get all rules with a selector matching a string (regex supported)
getSelectorRules('.test-block');
getSelectorRules('^div');

// get all rules matching for a DOMNode
getMatchingCSSRules($('.test-block'));

Toggle Visibility

This jQuery snippet allows you to hide any element with class .toFade when clicking on a external element with a class of .fader.

Usage:

<head>
  <script src="./toggleVisibility.js" type="text/javascript"></script>
</head>
<body>
	<button class="fader">button to fade</button>
	<div class="toFade">This text will fade on the click of button</div>
</body>

CheckImageLoaded

This jQuery snippet allows one to check if an image is loaded.

Usage:

<head>
  <script src="./checkImageLoaded.js" type="text/javascript"></script>
</head>
<body>
<img src="pic_mountain.jpg" alt="Mountain View" style="width:304px;height:228px;">
</body>

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