Tag Archives: learn jquery online

jQuery Ajax get Method


jQuery Ajax get method loads data from server using the HTTP GET Request.


jQuery Ajax $.get() Method Syntax

$.get(url,function(response,status));

url(Required): Url of the file you want to load.
function : (optional): Callback is executed when the request completes.

jQuery Ajax get method Example

  

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Note : get_method_demo.php contains the following data which is returned from the server :

Get Method Demo

Data Loaded from server using get method.

jQuery Ajax Basic Example


Ajax : Ajax stands for Asynchronous Javascript And Xml. Ajax is used to load data from server without reloading the whole page. In short Ajax loads data from server and updates in the specified part of the page. Now we will give a short jQuery Ajax Basic Example for beginners with syntax.


How to use jQuery with Ajax?

Here we are going to show very basic example of the Ajax using .load() method which will load data from server without the page reload.

jQuery Ajax Basic Example

  

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jQuery empty Method


jQuery empty Method : is used to remove the children elements of selected element from the DOM. It removes the child elements of the selected element. $(selector).empty() is used to empty ie. remove child elements of the selector ie selected element. We are going to explain this method with example and demo.

Note : Empty method removes only child elements not the selector element.

Syntax

Syntax for empty method –

$(selector).empty();

jQuery empty Method Example

Below example shows the empty method try it –

jQuery empty() Method – Example

  

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The above example will produce following output-

jQuery empty Method

jQuery replaceWith Method


jQuery replaceWith method : is used to replace the selected element with another element. This method replaces the existing content with selected content. We are going to explain this method with example and demo.


Syntax

$(selector).replaceWith(element);

jQuery replaceWith Method Example

jQuery replaceWith() Method – Example

  

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The above example will produce the following output-

jQuery replaceWith Method

jQuery insertBefore Method


jQuery insertBefore method : is used to insert new html element(content) before the specified element. If You want to add some content before a specified element, use the jQuery insertBefore Method. The $(content).insertBefore(selector) is used to select and insert content before.


Syntax : jQuery insertBefore

Here is syntax to add content(insertBefore) Before selected element using jQuery-

$(content).insertBefore(selector);

jQuery insertBefore() Method – Example –

  

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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.

jQuery insertBefore Method

jQuery val Method


jQuery val method : is used to get and set value in form fields.


Syntax of jQuery val() method

Get Value

$(selector).val();

Note : It does not accepts any argument.
It is used to get form field value.

jQuery val Method Example 1

jQuery val() Method – Example 1 – Get The val

  

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Set Val

$(selector).val(value);

value:value to be set.

jQuery val method Example 2

jQuery val() Method – Example 2 – Set The val/h3>

  

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jQuery has Method Example


jQuery “has() Method ” is used to select all elements which have descendants that matches the selector element.


Syntax : jQuery has() method

$(selector).has(element);

element : Required , is used to match the elements against.

jQuery has Method Example

jQuery has() Method Example with syntax

  

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jQuery siblings method


jQuery siblings method : jQuery “siblings() Method ” is used to get all siblings of the selected element. It returns the all siblings of the selected element. It accepts one parameter as filter which is optional. We are going to explain this method with the help of example and demo.


Syntax : jQuery siblings method

Syntax of siblings method

$(selector).siblings(filter);

filter : It is optional, A selector expression is used to match(siblings) the elements against.

jQuery siblings Method Example

Here is an example of siblings method Click on Try it button to see the output-

jQuery siblings() Method – Example

  

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The above example will produce the following output-

Note : Below out is produced when you click on the Click to run siblings() Example button. To experience this demo click on the above “Try it” button.

jQuery siblings method

jQuery parentsUntil Method


jQuery parentsUntil Method – jQuery “parentsUntil() Method ” is used to get all ancestors between selector and selector-element ie. stop point where to stop matching ancestor elements.

This method becomes useful when you are traversing the element in DOM. We are going to explain this method will full example and demo.


jQuery parentsUntil() method

Here is syntax for parentsUntil Method –

$(selector).parentsUntil(selector-element,filter);

selector-element It is stop point where to stop matching ancestor elements
filter : It is optional, A selector expression used to match(parent) the elements against.

jQuery parentsUntil Method Example

Here is an example with demo try it to test the functionality of the parentsUntil method-

jQuery parentsUntil() Method – Example

  

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The above example will produce the following output as below –

jQuery parentsUntil Method Example Demo