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In IE, JQuery plug-ins that support text box and Password box placeholder effects can be shared,

Source: Internet
Author: User
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In IE, JQuery plug-ins that support text box and Password box placeholder effects can be shared,

I wrote this plug-in a long time ago. It is implemented based on jQuery and is mainly used for implementing the placeholder effect in IE. It supports both text and password input boxes.

Placeholder is a new attribute added to HTML5. When this attribute is set in input, the content of this value will be displayed as a gray prompt in the text box. When the text box gets the focus, the text will disappear.

: Http://xiazai.jb51.net/201501/other/placeholderfriend.rar

The implementation code is as follows:

Copy codeThe Code is as follows:
(Function ($ ){
/**
* No blooming trees
*
*/

Var placeholderfriend = {
Focus: function (s ){
S = $ (s). hide (). prev (). show (). focus ();
Var idValue = s. attr ("id ");
If (idValue ){
S. attr ("id", idValue. replace ("placeholderfriend ",""));
}
Var clsValue = s. attr ("class ");
If (clsValue ){
S. attr ("class", clsValue. replace ("placeholderfriend ",""));
}
}
}

// Determine whether placeholder is supported
Function isPlaceholer (){
Var input = document. createElement ('input ');
Return "placeholder" in input;
}
// Unsupported code
If (! IsPlaceholer ()){
$ (Function (){

Var form = $ (this );

// Traverse all text boxes and add a placeholder Simulated Event
Var elements = form. find ("input [type = 'text'] [placeholder]");
Elements. each (function (){
Var s = $ (this );
Var pValue = s. attr ("placeholder ");
Var sValue = s. val ();
If (pValue ){
If (sValue = ''){
S. val (pValue );
}
}
});

Elements. focus (function (){
Var s = $ (this );
Var pValue = s. attr ("placeholder ");
Var sValue = s. val ();
If (sValue & pValue ){
If (sValue = pValue ){
S. val ('');
}
}
});

Elements. blur (function (){
Var s = $ (this );
Var pValue = s. attr ("placeholder ");
Var sValue = s. val ();
If (! SValue ){
S. val (pValue );
}
});

// Traverse all password boxes and add a simulated placeholder event
Var elementsPass = form. find ("input [type = 'Password'] [placeholder]");
ElementsPass. each (function (I ){
Var s = $ (this );
Var pValue = s. attr ("placeholder ");
Var sValue = s. val ();
If (pValue ){
If (sValue = ''){
// DOM does not support type modification. You need to copy the Password box attribute to generate a new DOM
Var html = this. outerHTML | "";
Html = html. replace (/\ s * type = (['"])? Password \ 1/gi, "type = text placeholderfriend ")
. Replace (/\ s *(? : Value | on [a-z] + | name) (= (['"])? \ S * \ 1 )? /Gi ,"")
. Replace (/\ s * placeholderfriend/, "placeholderfriend value = '" + pValue
+ "'" + "Onfocus = 'placeholderfriendfocus (this );'");
Var idValue = s. attr ("id ");
If (idValue ){
S. attr ("id", idValue + "placeholderfriend ");
}
Var clsValue = s. attr ("class ");
If (clsValue ){
S. attr ("class", clsValue + "placeholderfriend ");
}
S. hide ();
S. after (html );
}
}
});

ElementsPass. blur (function (){
Var s = $ (this );
Var sValue = s. val ();
If (sValue = ''){
Var idValue = s. attr ("id ");
If (idValue ){
S. attr ("id", idValue + "placeholderfriend ");
}
Var clsValue = s. attr ("class ");
If (clsValue ){
S. attr ("class", clsValue + "placeholderfriend ");
}
S. hide (). next (). show ();
}
});

});
}
Window. placeholderfriendfocus = placeholderfriend. focus;
}) (JQuery );

The example is as follows:

Copy codeThe Code is as follows:
<Html>
<Head>
<Script src = "jquery. js" type = "text/javascript"> </script>
<Script src = "placeholderfriend. js" type = "text/javascript"> </script>
</Head>
<Body>
<Input placeholder = "account/mobile phone number"> <br>
<Input placeholder = "password" type = "password">
</Body>
</Html>

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.

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