Usage examples of val() method in jQuery_jquery

The example in this article describes the usage of the val() method in jQuery. Share it with everyone for your reference. The specific analysis is as follows:

This method sets or gets the value attribute of the matching element.

Only elements with value attributes can use this method. For example, input elements can use this method, but div elements cannot.

Usage:

Usage 1:

When this method takes no parameters, it returns the value attribute of the first matching element. For example:

Copy code The code is as follows:

$("input").val()

The above code is to obtain the value attribute value of the first input element.
Example code:

Copy code The code is as follows:

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Click to see the effect

Usage 2:

When this method takes parameters, it sets the attribute values ​​of all matching elements. For example:

Copy code The code is as follows:

$("input").val("This is a test script")

The above code sets the value attribute value of all input elements to "This is a test script".
Example:

Copy code The code is as follows:

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Click to see the effect

I hope this article will be helpful to everyone’s jQuery programming.