如何设置属性到创建的元素？ [英] How to set attribute to created element ?

问题描述

我想直接将标签发布到html体内，但是一个新问题是我发现未定义值的错误按摩，检查我的代码建议我该怎么办？



我尝试了什么：

i want to directly post tags into html body but a new problem is that i found error massages of undefined values, check my code suggest me what to do ?

What I have tried:

function body(el,at,txt)
{
el = document.createElement(el);
p.setAttribute(at);
t = document.createTextNode(txt);
el.appendChild(t);
}

body("p", "id='demo'", "i m paragraph");

/* this code doesnt work why */

推荐答案

试试这个

try this

<script>
       function body(el, at, txt) {
           var elem = document.createElement(el);
           var keyvalue = at.split('='); // split to get key and value
           elem.setAttribute(keyvalue[0], keyvalue[1]); // setAttribute accepts 2 param (key and value )
           t = document.createTextNode(txt);
           elem.appendChild(t);
           document.body.appendChild(elem); // append the element to body

       }

       body("p", "id=demo", "i m paragraph"); // remove the single quotes
   </script>

演示： JSFiddle [ ^ ]

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