JQuery css () selector usage instructions

CSS operations have an important approach: CSS ()

CSS () has three different syntax to complete their work:

$ (selector). CSS (Name,value)
$ (selector). css ({properties})
$ (selector). CSS (name)

Return CSS Property use CSS (name) to return the value of the CSS property for the first matching element specified:

Example

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$ (this). CSS ("Background-color");

Try» Set CSS properties and values use CSS (name,value) to set CSS properties for all matching elements:
Example

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$ ("P"). CSS ("Background-color", "yellow");

We need to change multiple style attributes, we can first define the property variables, and then directly assign to the CSS () method. Examples are as follows:

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var divcss = { Background: ' #EEE ', Width: ' 478px ', margin: ' 10px 0 0 ', padding: ' 5px 10px ', border: ' 1px solid #CCC ' }; $ ("#result"). CSS (DIVCSS);

Here we first define a CSS style attribute variable ' divcss ', which is similar to creating an external CSS file.
Then through the CSS () method provided by jquery, the attribute is assigned to the DIV with id ' #result '. In addition, the CSS () method provided by jquery can also be used to view the CSS property values of an element. For example, if we want to see the color of a link, we can use the following code:

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$ ("#61dh a"). CSS ("color")

Similar to the first example, but here we only pass one argument (style attribute) The last thing to describe is how to set the link style (for example, color) after the mouse stroke. We can not use the selector directly select the mouse across the state of the link, which means $ ("a:hover") is not established. So we need to use the event class method provided by jquery-hover (). It is worth noting that the hover () method needs to define two functions, one is the mouse is out of date, and the other is after the mouse is drawn. The specific methods are as follows:

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$ ("#61dh a"). css (' color ', ' #123456 '); $ ("#61dh a"). Hover (function () { $ (this). CSS (' color ', ' #999 '); }, function () { $ (this). CSS (' color ', ' #123456 '); });

The two functions of the hover () method are separated by commas you may notice that this method is not concise (contrary to the purpose of jquery), in fact, jquery provides the hover () method is not used to change the CSS style. In practical use, it is recommended to use the Add/Remove CSS method to change the mouse across the link style.

Toggle Style

jquery provides Toggleclass () method to control style switching

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$ ("P"). Toggleclass ("another");

Determines whether a style is included and returns False if there is a return true

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$ ("P"). Hasclass ("another"); Equivalent to $ ("P"). Is (". another");

How jquery Deletes a CSS property

You can use class to set up and then Removeclass (), for example

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$ ("#test"). attr ("style", {"Display": "None"});

You can use it if you don't want it at all

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$ ("#test"). Removeattr ("style");

Note: Use of removeattr is OK.

Also, if you are just showing and hiding (not animating), define a. Hide {Display:none}, and then use AddClass () and Removeclass () performance will be higher.