Jquery index() method obtains the index value of the corresponding element_jquery

index([subject]) method, return value: Number (counting from 0)
index() method returns the index position of the specified element relative to other specified elements. Note: index() will return -1 if the element is not found.

Copy code The code is as follows:

< ;script type="text/javascript">
$(document).ready(function(){
$("button").click(function(){
alert($(". hot").index($("#favorite")));
});
});


Please click the button below to get the index of the element with id="favorite" relative to the jQuery selector (class="hot"):
Get index

• Milk


• Tea


• Coffee