windows.onload方法和$(document).ready()方法 的区别

node2:/var/www/html/js#cat h8.html 
<a>abc</a>
<script type="text/javascript" src="jquery-2.2.2.min.js"></script>    
<script type="text/javascript" src="h8.js"></script>
node2:/var/www/html/js#
node2:/var/www/html/js#cat h8.js
function one(){
   alert("one");
}


function two(){
   alert("two");
}

window.onload=one;
window.onload=two;