Implementing InnerText Properties for Firefox
A lot of code written and forgot to write, very wasteful, so decided to develop the habit of making notes.
Knowledge Points:
0, why should innertext? Because of security.
1. Extended properties for the Firefox DOM model
2, the Currentstyle property can get the actual style state
3, IE implemented innertext when the display mode, if the block is added line
4, why not textcontent? Because Textcontent does not consider the element display way, so not completely with IE compatible
Copy Code code as follows:
<body>
<div id= "D1" ><a href= "AA" >ccc</a>ddd<div>eeee</div>fff</div>
<script type= "Text/javascript" >
<!--
//
Patch of innertext for Firefox
//
(function (bool) {
function Setinnertext (o, s) {
while (o.childnodes.length!= 0) {
O.removechild (O.childnodes[0]);
}
O.appendchild (document.createTextNode (s));
}
function Getinnertext (o) {
var sret = "";
for (var i = 0; i < o.childnodes.length i + +) {
if (o.childnodes[i].childnodes.length!= 0) {
Sret + + getinnertext (o.childnodes[i]);
}
if (O.childnodes[i].nodevalue) {
if (O.currentstyle.display = = "Block") {
Sret + = O.childnodes[i].nodevalue + "\ n";
} else {
Sret + = O.childnodes[i].nodevalue;
}
}
}
return sret;
}
if (bool) {
htmlelement.prototype.__definegetter__ ("Currentstyle", function () {
Return This.ownerDocument.defaultView.getComputedStyle (this, null);
});
htmlelement.prototype.__definegetter__ ("InnerText", function () {
Return Getinnertext (this);
})
htmlelement.prototype.__definesetter__ ("InnerText", function (s) {
Setinnertext (this, s);
})
}
}) (/firefox/.test (window.navigator.userAgent));
-->
</script>
<script type= "Text/javascript" >
<!--
var D1 = document.getElementById ("D1");
alert (D1.innertext);
D1.innertext = "xxx";
-->
</script>
</body>
Today in the production of Firefox to support the replication of the JS code, used to innertext, the test found that the original Firefox support innerHTML but do not support innertext, so the internet looked for a moment, found a very good code. From the reply, we get the following compatibility code. Fixed the original IE under the error prompted the problem. A specific look at the article.
Add this paragraph to your JS file and you can use it under Mozilla/firefox innertext
Copy Code code as follows:
htmlelement.prototype.__definegetter__
(
"InnerText",
function ()
{
var anystring = "";
var ChildS = this.childnodes;
for (var i=0; i<childs.length; i++)
{
if (childs[i].nodetype==1)
AnyString + = childs[i].tagname== "BR"? ' \ n ': childs[i].innertext;
else if (childs[i].nodetype==3)
AnyString + = Childs[i].nodevalue;
}
return anystring;
}
);
But this code in IE, it will prompt htmlelement undefined, the following is the specific solution.
Copy Code code as follows:
function Isie () {//ie? Determine whether IE
if (window.navigator.userAgent.indexOf ( "MSIE") >=1
return true;
Else
return false;
}
if (!isie ()) {
htmlelement.prototype.__definegetter__
(
"innertext",
Function ()
{
var anystring = "";
var childS = this.childnodes;
for (var i=0 i<childs.length; i++)
{
if (childs[i].nodetype==1)
AnyString + = childs[i].tagname== "B R "? ' \ n ': childs[i].innertext;
Else if (childs[i].nodetype==3)
AnyString + = Childs[i].nodevalue;
}
Return anystring;
}
);
}
