<html>
<head>
<title>Html Editor Filter</title>
<style type="text/css">
.editor
{
border:1px solid #333333;
}
</style>
</head>
<body>
<iframe src="iframeblankpage.html" id="editor" class="editor" frameborder="0" height="200" width="500"></iframe>
<script type="text/javascript">
var isIE=(navigator.appName.indexOf("Microsoft")!=-1)?true:false;
function initEditor()
{
var ifrm=document.getElementById("editor")
ifrm.contentWindow.document.designMode = "On";
ifrm.contentWindow.document.write("<body style=\"font-size:70%;font-family:Verdana,Arial,sans-serif;margin:0;min-height:20px\"></body>");
ifrm.contentWindow.document.close();
if(isIE)
{
ifrm.contentWindow.document.documentElement.attachEvent("onpaste", function(e){return pasteClipboardData(ifrm.id,e);});
}
else
{
ifrm.contentWindow.document.addEventListener("paste", function(e){return pasteClipboardData(ifrm.id,e);},false);
}
}
initEditor();
function getSel(w)
{
return w.getSelection ? w.getSelection() : w.document.selection;
}
function setRange(sel,r)
{
sel.removeAllRanges();
sel.addRange(r);
}
function filterPasteText(sHtml)
{
sHtml = sHtml.replace(/<.*?>/ig, '');
return sHtml;
}
function filterPasteData(originalText)
{
return filterPasteText(originalText);
}
function block(e)
{
e.preventDefault();
}
var w,or,divTemp,originText;
var newData;
function pasteClipboardData(editorId,e)
{
var objEditor = document.getElementById(editorId);
var edDoc=objEditor.contentWindow.document;
if(isIE)
{
var orRange=objEditor.contentWindow.document.selection.createRange();
var ifmTemp=document.getElementById("ifmTemp");
if(!ifmTemp)
{
ifmTemp=document.createElement("IFRAME");
ifmTemp.id="ifmTemp";
ifmTemp.style.width="1px";
ifmTemp.style.height="1px";
ifmTemp.style.position="absolute";
ifmTemp.style.border="none";
ifmTemp.style.left="-10000px";
ifmTemp.src="iframeblankpage.html";
document.body.appendChild(ifmTemp);
ifmTemp.contentWindow.document.designMode = "On";
ifmTemp.contentWindow.document.open();
ifmTemp.contentWindow.document.write("<body></body>");
ifmTemp.contentWindow.document.close();
}else
{
ifmTemp.contentWindow.document.body.innerHTML="";
}
originText=objEditor.contentWindow.document.body.innerText;
ifmTemp.contentWindow.focus();
ifmTemp.contentWindow.document.execCommand("Paste",false,null);
objEditor.contentWindow.focus();
newData=ifmTemp.contentWindow.document.body.innerHTML;
//filter the pasted data
newData=filterPasteData(newData);
ifmTemp.contentWindow.document.body.innerHTML=newData;
//paste the data into the editor
orRange.pasteHTML(newData);
//block default paste
if(e)
{
e.returnValue = false;
if(e.preventDefault)
e.preventDefault();
}
return false;
}else
{
enableKeyDown=false;
//create the temporary html editor
var divTemp=edDoc.createElement("DIV");
divTemp.id='htmleditor_tempdiv';
divTemp.innerHTML='\uFEFF';
divTemp.style.left="-10000px"; //hide the div
divTemp.style.height="1px";
divTemp.style.width="1px";
divTemp.style.position="absolute";
divTemp.style.overflow="hidden";
edDoc.body.appendChild(divTemp);
//disable keyup,keypress, mousedown and keydown
objEditor.contentWindow.document.addEventListener("mousedown",block,false);
objEditor.contentWindow.document.addEventListener("keydown",block,false);
enableKeyDown=false;
//get current selection;
w=objEditor.contentWindow;
or=getSel(w).getRangeAt(0);
//move the cursor to into the div
var docBody=divTemp.firstChild;
rng = edDoc.createRange();
rng.setStart(docBody, 0);
rng.setEnd(docBody, 1);
setRange(getSel(w),rng);
originText=objEditor.contentWindow.document.body.textContent;
if(originText==='\uFEFF')
{
originText="";
}
window.setTimeout(function()
{
//get and filter the data after onpaste is done
if(divTemp.innerHTML==='\uFEFF')
{
newData="";
edDoc.body.removeChild(divTemp);
return;
}
newData=divTemp.innerHTML;
// Restore the old selection
if (or)
{
setRange(getSel(w),or);
}
newData=filterPasteData(newData);
divTemp.innerHTML=newData;
//paste the new data to the editor
objEditor.contentWindow.document.execCommand('inserthtml', false, newData );
edDoc.body.removeChild(divTemp);
},1);
//enable keydown,keyup,keypress, mousedown;
enableKeyDown=true;
objEditor.contentWindow.document.removeEventListener("mousedown",block,false);
objEditor.contentWindow.document.removeEventListener("keydown",block,false);
return true;
}
}
</script>
</body>
</html>
标签：js,objEditor,contentWindow,过滤,divTemp,document,ifmTemp,newData,粘贴 From： https://www.cnblogs.com/jiunie/p/17391592.html