js冒泡法和数组转换成字符串

js代码:window.onload = function(){var mian = document.getElementById( "mian" );var mian1 = document.getElementById( "mian1" );var str = mian.innerHTML;var arry = [];var len = str.length;for( var i = 0; i < len; i++ ){arry[ i ] =  str[ i ];};function paix1( arry ){var temp;while( len > 0 ){for( var j = 0; j < len - 1; j++ ){if( arry[ j ] > arry[ j+1 ] ){temp = arry[ j ];arry[ j ] = arry[ j + 1 ];arry[ j + 1 ] = temp;};};len--;};return arry;};mian1.innerHTML = paix1(arry).join("");           // 把数组转换成为字符串};

html代码：<div id="mian">vdwsxdfrthspas</div><div id="mian1"></div>