How to set attribute to created element ?

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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:

JavaScript

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 */

Posted 29-Jul-16 2:35am

prasad sawant

Updated 29-Jul-16 3:07am

Suvendu Shekhar Giri

v2

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Karthik_Mahalingam · Accepted Answer · 2016-07-29T03:07:00

try this

HTML

<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>

demo : JSFiddle[^]