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This article editor for you to introduce in detail "jquery data () how to use", the content is detailed, the steps are clear, the details are handled properly, I hope this "jquery data () how to use" article can help you solve your doubts, the following follow the editor's ideas slowly in-depth, together to learn new knowledge.

In jquery, the data () method can be used to attach data to the selected element with the syntax "$(selector) .data (name,value)" or to get data from the selected element with the syntax "$(selector) .data (name)".

The operating environment of this tutorial: windows7 system, jquery1.10.2 version, Dell G3 computer.

Jquery data () method

The data () method appends data to or gets data from the selected element.

Syntax:

Returns additional data from the selected element.

The $(selector) .data (name) parameter describes the name

Optional. Specifies the name of the data to be retrieved.

If no name is specified, the method returns all stored data from the element as an object.

Attach data to the selected element.

Can be a single name / value pair

The $(selector) .data (name,value) parameter describes the name required. Specifies the name of the data to be set. Value is required. Specifies the value of the data to be set.

You can also use objects with name / value pairs to add data to the selected element.

The $(selector) .data (object) parameter describes the object required. Specifies the object that contains the name / value pair.

Example: attach data to an element and then retrieve that data

$(document) .ready (function () {$("# btn1") .click (function () {$("div") .data ("greeting", "Hello World");}) $("# btn2") .click (function () {alert ($("div"). Data ("greeting");});}) Add data to the div element to get the data that has been added to the div element

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