When I tested the code today, I found a lot of ajax that IE can run, but an error was reported in FF. The incompatibility between IE and Firefox in JavaScript and the unified method are summarized as follows. If you need it, you can check the compatibility of multiple browsers.
1. compatible with firefox's outerHTML and FF, there is no outerHtml method.
The Code is as follows:
If (window. HTMLElement ){
HTMLElement. prototype. _ defineSetter _ ("outerHTML", function (sHTML ){
Var r = this. ownerDocument. createRange ();
R. setStartBefore (this );
Var df = r. createContextualFragment (sHTML );
This. parentNode. replaceChild (df, this );
Return sHTML;
});
HTMLElement. prototype. _ defineGetter _ ("outerHTML", function (){
Var attr;
Var attrs = this. attributes;
Var str = "<" + this. tagName. toLowerCase ();
For (var I = 0; iattr = attrs [I];
If (attr. specified)
Str + = "" + attr. name + '= "' + attr. value + '"';
}
If (! This. canHaveChildren)
Return str + "> ";
Return str + ">" + this. innerHTML +" ";
});
HTMLElement. prototype. _ defineGetter _ ("canHaveChildren", function (){
Switch (this. tagName. toLowerCase ()){
Case "area ":
Case "base ":
Case "basefont ":
Case "col ":
Case "frame ":
Case "hr ":
Case "img ":
Case "br ":
Case "input ":
Case "isindex ":
Case "link ":
Case "meta ":
Case "param ":
Return false;
}
Return true;
});
}
2. Collection class Object Problems
Note: in IE, you can use () or [] to obtain collection class objects. In Firefox, you can only use [] to obtain collection class objects.
Solution: use [] to retrieve collection class objects.
3. Custom Attributes
Note: in IE, you can use the method to obtain general attributes to obtain custom attributes, or use getAttribute () to obtain Custom Attributes. In Firefox, you can only use getAttribute () obtain custom attributes.
Solution: getAttribute () is used to obtain custom attributes.
4. eval ("idName") Problems
Note: in IE, you can use eval ("idName") or getElementById ("idName") to obtain the HTML object whose id is idName. In Firefox, you can only use getElementById ("idName ") to obtain the HTML object whose id is idName.
Solution: getElementById ("idName") is used to retrieve the HTML object whose id is idName.
5. The variable name is the same as the ID of an HTML object.
Note: In IE, the ID of the HTML object can be used directly as the variable name of the subordinate object of the document; in Firefox, it cannot. in Firefox, you can use the same variable name as the HTML Object ID; in IE, you cannot.
Solution: Use document. getElementById ("idName") replaces document. idName. we recommend that you do not use variable names with the same HTML Object ID to reduce errors. When declaring variables, add var to avoid ambiguity.
6. const Problems
Note: In Firefox, you can use the const keyword or var keyword to define constants. in IE, you can only use the var keyword to define constants.
Solution: Use the var keyword to define constants.
7. input. type attribute Problems
Description: The input. type attribute in IE is read-only, but the input. type attribute in Firefox is read/write.
8. window. event Problems
Note: window. event can only be run in IE, but not in Firefox, because Firefox event can only be used in the event.
Solution:
IE:
The Code is as follows:
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