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Jquery search box effect implementation method, jquery search box implementation

Source: Internet
Author: User
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Jquery search box effect implementation method, jquery search box implementation

This article describes how to implement the jquery search box. Share it with you for your reference. The specific implementation method is as follows:

Copy codeThe Code is as follows: <Head>
<Title> jquery: search box effect </title>
<Script type = "text/javascript" src = "jquery-1.8.2.min.js"> </script>
<Script type = "text/javascript">
$ (Function (){
$ ('# Search'). val ("Enter the search content"). addClass ("c1 ");
$ ('# Search'). focus (function () {// when the search box gets the focus
$ ('# Search'). val (""). addClass ("c2 ");
});
$ ('# Search'). blur (function () {// when the search box loses focus
If ($ ('# search'). val () = ""){
$ ('# Search'). val ("Enter the search content"). attr ("class", "c1 ");
}
});
});
</Script>
<Style type = "text/css">
. C1 {color: gray; font-style: italic ;}
. C2 {color: #000; font-style: normal ;}
</Style>
</Head>
<Body>
<Input type = "text" size = "38" id = "search"/> <button> search </button>
</Body>
</Html>
Note: some are not perfect. If there are other styles in the search box, if the focus is lost and the code in the example is used, the other styles will be lost because attr () is used to set the styles. If addClass () is used as the append style, it is not very suitable. Although it can achieve the effect, the original c2 style is still in, the display is replaced by the c1 style (this requires the c1 style to be written after c2 ). Seems there is no way to replace the style?

After modification, the above problem is solved, which is a better version (the code can be optimized more easily)
Copy codeThe Code is as follows: <Head>
<Title> jquery: search box effect </title>
<Script type = "text/javascript" src = "jquery-1.8.2.min.js"> </script>
<Script type = "text/javascript">
$ (Function (){
$ ('# Search'). val ("Enter the search content"). addClass ("c1 ");
$ ('# Search'). focus (function () {// when the search box gets the focus
If ($ ('# search'). val () = "Enter the search content "){
$ ('# Search'). val (""). addClass ("c2"). removeClass ("c1 ");
}
});
$ ('# Search'). blur (function () {// when the search box loses focus
If ($ ('# search'). val () = ""){
$ ('# Search'). val ("Enter the search content"). addClass ("c1"). removeClass ("c2 ");
}
});
});
</Script>
<Style type = "text/css">
. C1 {color: gray; font-style: italic ;}
. C2 {color: #000; font-style: normal ;}
</Style>
</Head>
<Body>
<Input type = "text" size = "38" id = "search"/> <button> search </button>
</Body>
</Html>

I hope this article will help you with jQuery programming.

This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

Related Keywords:
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