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How to apply the script in Ajax when specifying innerhtml

Source: Internet
Author: User
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In fact, this article Article It has nothing to do with Ajax, but it is a problem encountered in the Ajax project. so .... when the innerhtml value assignment operation is performed, the script won't be run. You can use a regular expression to extract the script and then eval (SCRIPT );

ExampleCode

<HTML>
<Head>
<SCRIPT type = "text/JavaScript">
<! --
Function load1 (){
VaR content = Document. getelementbyid ("content ");
Alert ("load1 ");
}
Function load2 (){
VaR content = Document. getelementbyid ("content ");
Content. innerhtml = "load2: <SCRIPT> load1 (); <\/SCRIPT> ";
}

Function load3 (){
VaR content = Document. getelementbyid ("content ");

// Why does JavaScript have to be followed by a valid text tag? The difference between Javascript in IE and Firefox should be discussed again.

// If there is no valid text tag, ie will fail. But Firefox can run normally. God, save IE.
VaR STR = "<A> JavaScript must be followed by a valid text tag </a> <SCRIPT type = \" text/JavaScript \ "> load1 (); <\/SCRIPT> ";
Content. innerhtml = STR;
VaR Regexp =/<script. *> (. *) <\/SCRIPT>/GI;
If (Regexp. Test (content. innerhtml )){
Eval (Regexp. $1 );
}

//// The following code is set to match multiple script blocks, but unfortunately it cannot be used in IE.

//// It can only run on Firefox. Because it is enough, you can complete it if you are not interested in writing it. Even if Javascript is not well written
// Var matcharray = Str. Match (Regexp );
// If (matcharray ){
// For (VAR I = 0; I <matcharray. length; I ++ ){
// If (Regexp. Test (matcharray [I]) {
// Alert (Regexp. $1 );
//}
// Else {
// Alert (matcharray [I]);
//}
//}
//}

}

// -->
</SCRIPT>
</Head>
<Body>
<Div id = "content">
</Div>
<Input type = "button" onclick = "javascript: load1 ();" value = "load1"/>
<Input type = "button" onclick = "javascript: load2 ();" value = "load2"/>
<Input type = "button" onclick = "javascript: load3 ();" value = "load3"/>
</Body>
</Html>

[Description]

Load1

Of course it can run normally

Load2

When content. innerhtml is assigned a value, the script will not be run.

Load3

The script block in innerhtml can be obtained and run properly only after Eval is obtained.

Maybe there's a better way, please mail to me blackant@tt88.cn

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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