How jquery modifies the value of a specified property

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In jquery, you can use the attr () method to modify the value of a specified attribute, which sets the property value of the selected element, with the syntax "$(selector) .attr (" attribute name "," attribute value ")" or "$(selector). Attr ({attribute name: attribute value})".

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

In jquery, you can use the attr () method to modify the value of a specified property.

The attr () method sets or returns the property value of the selected element. The working mode of the method is also different according to the different parameters of the method.

The syntax for setting the property value:

$(selector) .attr (attribute,value) / / single attribute / value pair $(selector) .attr ({attribute:value, attribute:value...}) / / multiple attribute / value pairs

Example:

$(document) .ready (function () {$("button") .click (function () {$("img"). Attr ("width", "380");})

Set the width property of the image

$(document) .ready (function () {$("button") .click (function () {$("img"). Attr ({width: "300", height: "350"});})

Set the width and height properties of the image

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