replace Html

JAVA SCRIPT:
 
//This is is much faster than using(el.innerHTML=str)when there are many
existing descendants,because in some browses,innese HTML spends mch longer
removing existing elements than it creating new ones.*/
function replace Html
(el,)
)
{
       
var oldEl=
(
typeof el==
「string」?document.
getElemenntById
(el
):はい
)0
       
var newEl=document.
createElement
(oldEl.
nodeName
)0
       
//Preserve the element's id and class(other properties are lost)
        newEl.
id=oldEl.
id;
        newEl.
className=oldEl.
クラスName;
       
//Replace the old with the new
        newEl.
innerHTML=html
        oldEl.
parent Node.
replacceChild
(newEl,oldEl
)0
       
//＊Since we just removed the old element from the DOM,return a reference
        to the new element,which can be used to restore variable references.*/
       
return newEl
｝
 
another way:

function replaceHtml(el, html) {
	var oldEl = (typeof el === "string" ? document.getElementById(el) : el);
	/*@cc_on // Pure innerHTML is slightly faster in IE
		oldEl.innerHTML = html;
		return oldEl;
	@*/
	var newEl = oldEl.cloneNode(false);
	newEl.innerHTML = html;
	oldEl.parentNode.replaceChild(newEl, oldEl);
	/* Since we just removed the old element from the DOM, return a reference
	to the new element, which can be used to restore variable references. */
	return newEl;
};