javascript 方法一些使用方法

!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" html xmlns="http://www.w3.org/1999/xhtml" head meta http-equiv="Content-Type" content="text/html; charset=utf-8" / titl

 

function chens(a,b,c,d)

{

this.a=a==null?alert("a"):"chen";

b==null?alert("b"):"";

c==null?alert("c"):"";

document.write(this.a);

this.d==null?alert("d"):"";

}

 

<script></script>

var newopen = function(i)

{

  return function()

  {

    location.replace("http://www.com-edu.cn");

  } 

}

if (document.getElementById("btnan").attachEvent)

{

document.getElementById("btnan").attachEvent("onclick",newopen("popo"));

}

else

{

document.getElementById("btnan").addEventListener("click",newopen("tyty"),false); 

}