Tag Archives: learning jquery online

Refresh page using jQuery


Refresh page using jQuery : There are many ways to refresh a page using jQuery. You can use location.reload(). Here in this tutorial we are going to explain some of common used methods to reload the page in jQuery. We will explain this with example and demo.


Refresh page using jQuery

You use the following methods to refresh the page in jQuery –

Method 1 : Using location.reload()

You can use location.reload() to refresh a page. Here is an example-

Refresh page using jQuery Example:

$('#refresh').click(function() {
    location.reload();
});

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If You run the above example it will produce output something like this-

Refresh page using jQuery

Note : The above link is image output only for demo click above “Try It” Button.

Method 2 : Using history.go(0)

You can use history.go(0) to refresh a page. Here is an example-

Refresh page using jQuery Example:

$('#refresh').click(function() {
    history.go(0);
});

Try it »

If You run the above example it will produce output something like this-

Refresh page using jQuery

Note : The above link is image output only for demo click above “Try It” Button.

jQuery Abort Ajax Request


jQuery Abort Ajax Request – abort() is used to cancel the ajax request. abort() method cancels the requests that has been already sent. Here in this tutorial we are going to explain how you can use abort() method to cancel the ajax request in jQuery.


jQuery Abort Ajax Request : Kill / Cancel Ajax Request

You can cancel the ajax request simply using the abort() method as below –

jQuery Abort Ajax Request : Cancel Ajax Request Example

var ajaxReq = $.ajax({
    type: "POST",
    url: "server.php",
    data: "email=kelly@yopmail.com&phone=123",
    success: function(data){
       alert( data );
    }
});
//Now cancel the ajax request
ajaxReq.abort();

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The above example shows a sample ajax request. ajaxReq.abort(); will kill the current ajax request. You can use this function to cancel the ajax requests which has been sent.

Select element by data attribute in JavaScript


Select element by data attribute in JavaScript : We sometimes need to select element by data attribute in javascript. You can select the element simply using the document.querySelectorAll() in javascript. Here in this tutorial we are going to explain how you can select the element using the data attribute in javascript with example and demo.


Select element by data attribute in JavaScript

You can select the attribute using the data attribute as below –

javascript get element by data attribute value Example:

19293049503  

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If you run the above example it will show you the 19293049503. The output will look something like this-

Select element by data attribute in JavaScript: example

JavaScript Get Timestamp


JavaScript Get Timestamp: You can use Date.now() to get the UTC Timestamp in milliseconds. Date.now() Works for all major browsers. Here in this tutorial we are going to explain how to get current timestamp in javaScript. We will also learn how to use the timestamp in javaScript.


JavaScript Get Timestamp

Here is simple example which will give you timestamp in javascript-

JavaScript Get Timestamp:

  

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In the above example we have shown how to get current date and timestamp in javascript. The UTC timestamp shown above will work in all modern browsers.

Note :For older browsers use Date().getTime() instead of using Date.now().

The output of the above example will look something like this –

JavaScript Get Timestamp

More About JavaScript Timestamp

Let’s have look over the JavaScript time & Date with more example and demo here.

Convert UTC date time to local date time in JavaScript

You can convert the UTC time to local date time as below-

Convert UTC date time to local date time in JavaScript:


  
  

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The above example will give you the converted time local time from the UTC. When you run the above demo it will produce the output like this-

JavaScript Get Timestamp

jQuery get selected option value


jQuery get selected option value: You can get selected option value of html select box as below.


Syntax : jQuery get selected option value

Syntax to get selected option value of dropdown menu can be as :
Suppose we have following drop down list




You can get selected value in jquery as :


$("#demo").change(function () {
$("#demo :selected").attr('value');

});

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jQuery outerHeight Method


jQuery outerHeight Method : is used to get the height of selected element including the padding and border. OuterHeight method returns total height of the container. Here is syntax and example with complete demo of
jQuery OuterHeight() method.


jQuery outerHeight Method Syntax

Here is syntax for outer Height-

$(selector).outerHeight();

jQuery outerHeight Method Example

Below is example which is showing outerHeight with Example and demo –

  

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The above example will produce the following result –

jQuery outerHeight Method

jQuery width Method


jQuery width Method : is used to get or set the width of selected element. If want to set width of element pass width in .width() as input parameter.
We are going to explain jquery width method with example and demo.


jQuery width Method Syntax 1 Get Width

In this example we will get width of element using .width() method.

$(selector).width();

jQuery width() Method Example 1

Below example shows the get width method functionality –

  

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jQuery width Method Syntax 2 – Set Width

If you want to add width dynamically you can use width method as below-

$(selector).width(width);

width(px): Width in pixel.

jQuery width() Method Example 2

Here is an example of set width method –

  

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jQuery css Method


jQuery css Method : is used to add the css styles to the selected elements.


Syntax 1

$(selector).css(propertyName);

propertyName(String): Css Style to be added.

jQuery css() Method Example 1

  

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Syntax 2 for jQuery css Method

$(selector).css(propertyNames);

propertyNames (Array): List of styles in form of array.
Example : {‘background’:’yellow’,’font-size’:’24px’,’border’:’2px solid red’}

jQuery css() Method Example 2

  

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jQuery toggleClass Method


jQuery toggleClass Method : is used to toggle class(es) to the selected elements. It Adds the class if it is not there on selected element and if it is there, it removes the class.


Syntax jQuery toggleClass Method

Here is syntax to create toggle class functionality-

$(selector).toggleClass(classname,function(index,currentClassName));

index: (Interger) Index of the current element in the current set.
toggleClassName(String)Current Class name in the matching set.

jQuery toggleClass() Method Example 1

  

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The above code will produce following result-

Note : This is screenshot of the output. To run this demo click on the above “Try it” button.

Syntax jQuery toggleClass Method