JavaScript createDocumentFragment() 方法

createDocumentFragment() 方法创建一个文档碎片，与 createElement() 方法的差异如下：

var arrText=["1","2","3","4","5","6","7","8","9","10"];
for(var i=0;i<arrText.length;i++)
{
    var op=document.createElement("P");
    var oText=document.createTextNode(arrText[i]);
    op.appendChild(oText);
    document.body.appendChild(op);
}

var arrText=["1","2","3","4","5","6","7","8","9","10"];
var oFrag=document.createDocumentFragment();

for(var i=0;i<arrText.length;i++)
{
var op=document.createElement("P");
var oText=document.createTextNode(arrText[i]);
op.appendChild(oText);
oFrag.appendChild(op);

}
document.body.appendChild(oFrag);

参考：http://www.cnitblog.com/asfman/articles/32614.html