jQuery is() Method

jQuery Traversal Methods

The is() method checks if one of the selected elements matchesselectorExpressionMatch.

If at least one of these elements matches the given parameter, the is() method will return true, otherwise it will return false.

Syntax:

Check element:

$(selector).is(selectorExpression)

Use function to check element:

$(selector).is(function(index, element))

Instance

Check if the parent of <p> is a <div> element:

$(document).ready(function(){
　　$("p").parent().is("div");
});

Another example of using the is() method:

$("li").click(function () {
　　if($(this).is(":first-child")){
　　　　$("p").text("List item　1");
　　} else if ($(this).is(".middle")){
　　　　$("p").text(".middle class list item");
　　} else if ($(this).is(":contains('item　3');"){
　　　　$("p").text("List item3");
　　}
});

Parameter Value

jQuery Traversal Methods