[JS]-Firefox obtains the absolute path of the file (Temporary method)

Source: http://hi.baidu.com/ypxmaomao/blog/item/83dee50a800ef91694ca6b51.html

Step 1: Open the "about: config" Page, find the "signed. Applets. codebase_principal_support" attribute, and set its value to true.
Set to true
Step 2: Use the following in javascript:CodeTo obtain:
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Code:

< Script >
Function Getvalueff (ID ){
VaR IP = Document. getelementbyid (ID );
If (IP. Files ){
// Ffx3-try to have access to full path
Try {
Netscape. Security. privilegemanager. enableprivilege ( ' Universalfileread ' )
}
Catch (ERR ){
// Need to set signed. Applets. codebase_principal_support to true
}
};
Return IP. value;
}

Function Show (){
Alert (getvalueff ( " File1 " ))
}
< / SCRIPT>
< Input ID = " File1 " Type = " File " Onchange = " Show () " >

After the preceding steps, a warning window is displayed when you obtain the value of file input in firefox3. Click OK.