jQuery traversal - filtering
jQuery traversal - filtering
Abbreviation range of search elements
The three most basic filtering methods are: first(), last() and eq() , they allow you to select a specific element based on its position within a set of elements.
Other filtering methods, such as filter() and not() allow you to select elements that match or do not match a specified criterion.
jQuery first() method
first() method returns the first element of the selected element.
The following example selects the first
element inside the first
Example
$(document).ready(function(){ $("div p").first(); });
jQuery last() method
last() method returns the last element of the selected element.
The following example selects the last
element in the last
Example
$(document).ready(function(){ $("div p").last(); });
jQuery eq() method
eq() method returns the element with the specified index number among the selected elements.
The index number starts from 0, so the index number of the first element is 0 instead of 1. The following example selects the second
element (index number 1):
Example
$(document).ready(function(){ $("p").eq(1); });
jQuery filter() method
filter The () method allows you to specify a criterion. Elements that do not match this criterion are removed from the collection, and matching elements are returned.
The following example returns all
elements with the class name "intro":
Example
$(document).ready(function(){ $("p").filter(".intro"); });
jQuery not() method
not() method returns all elements that do not match the criteria.
Tip: The not() method is the opposite of filter().
The following example returns all
elements without the class name "intro":
Example
$(document).ready(function(){ $("p").not(".intro"); });
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