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There is a val () method in JavaScript, which can return the value attribute value of the first matching element, or set the value attribute value of all matching elements with the syntax of "$(selector). Val ()" or "$(selector) .val (value)".

The operating environment of this tutorial: windows10 system, javascript1.8.5 version, Dell G3 computer.

Is there a val method for javascript?

The val () method returns or sets the value property of the selected element.

When used to return a value:

This method returns the value of the value attribute of the first matching element.

When used to set values:

This method sets the value of the value attribute of all matching elements.

Note: the val () method is usually used with HTML form elements.

Grammar

Return the value property:

(selector) .val ()

Set the value property:

$(selector) .val (value)

Set the value property through the function:

$(selector) .val (function (index,currentvalue))

Examples are as follows:

$(document) .ready (function () {$("button") .click (function () {$("input:text") .ready ("set the value of the input field");})

Name:

Set the value of the input field

Output result:

After clicking the button:

What is JavaScript? JavaScript is a literal scripting language whose interpreter is called JavaScript engine and is a part of the browser. JavaScript is a scripting language widely used on the client side. It was first used on HTML pages to add dynamic functions to HTML pages.

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