js Dom转字符串与字符串转Dom

1、dom转字符串

 function parseDom(arg) {　　 var objE = document.createElement("div");　　 objE.innerHTML = arg;　　 return objE.childNodes;}; const dom=parseDom(arg)

2、dom转字符串

function nodeToString ( node ) {     var tmpNode = document.createElement( "div" );     tmpNode.appendChild( node.cloneNode( true ) );     var str = tmpNode.innerHTML;     tmpNode = node = null; // prevent memory leaks in IE     return str;  }  var escapedStr = nodeToString( node ).replace( "<" , "<" ).replace( ">" , ">");  outputNode.innerHTML += escapedStr;