简单的JS问题(如何用JS获得图片ALT属性中的内容)
如何用JS获得图片ALT属性中的内容

[解决办法]
<img id= 't ' src= "xxx " alt= "abcd " onload= " " /> 7
<script> alert(document.getElementById( 't ').alt); </script>
[解决办法]
<img id= "photo " alt= "我是图片 " />

方法一:
var obj = document.getElementById( "photo "); //引用对象
alert(obj.getAttribute( "alt "));

方法二:
var obj = document.getElementById( "photo ");
alert(obj.alt);