javascript - get value of value attribute usind id in javascript

Question

I want to get value of value attribute using id attribute of html tag.

<p id='abc' value='xyz'>123456</p>

and my javascript is

var a=document.getElementById(abc).innerHTML; 
alert(a);

this gives me alert "123456" but I want alert function should display me "xyz". How can I do these. I also tried getElementById(abc).value this returns nothing.

OR is there ant way to make tag which is doesn't display on browser. I don't want to display 123456 on browser.

Answer 1

尝试这个

var a = document.getElementById('abc').getAttribute('value'); 
alert(a);

请注意，abc您问题中的论点未用引号引起来。

Answer 2

尝试这个

alert(document.getElementById("abc").getAttribute("value"));

DOM Element getAttribute() 方法 - 获取链接的目标属性值：

演示

Answer 3

尝试以下操作：

var a=document.getElementById("abc").getAttribute("value");