ID ('#id')S2C Home « Selectors « ID ('#id')

ID selector.

Shorthand version  $('#id')

Description

The ('#id') selector, selects a single element with the specified id attribute value.

  • When used this method calls the JavaScript getElementById() function 'under the hood' which is extremely performant.
  • Using jQuery() or $() with an id selector argument will return a jQuery object containing a collection of either zero or one DOM element.
  • If an id selector contains characters such as . or : these have to be escaped with a double backslash \\.

Syntax

Signature Description
jQuery('#id')ID match

Parameters

Parameter Description
idAn ID attribute value to search for.

Return

N/A.

ID ('#id') ExamplesTop

Selects a single element with the specified id attribute value.

The following example will select the paragraph with the 'id' attribute of 'backGreen' and turn the background colour green.


$(function(){
  $('#btn1').on('click', function() {
    $('#backGreen').css('backgroundColor', 'green');
  });
}); 

Press the button below to action the above code:


The following example will select the button with the 'id' attribute of 'btn2' and turn the text colour blue.



$(function(){
  $('#btn2').on('click', function() {
    $('#btn2').css('color', 'blue');
  });
}); 


Press the button below to action the above code:

The following example will select the left grid with the 'id' attribute of 'left' and turn the background colour silver.



$(function(){
  $('#btn3').on('click', function() {
    $('#left').css('backgroundColor', 'silver');
  });
}); 


Press the button below to action the above code:

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