value attribute is showing null

Question

I am trying to get the value of ID but its showing null link https://codepen.io/rahulv/pen/zwjrXZ

function printCurrentTab(){
var content = "";
var activeTab = document.getElementById('activeDisTab').value;

getting error here in var activeTab

You get an error because you use jquery `content += $('#' + activeTab).html();` but did not include it. `document.getElementById('activeDisTab')` on its own works just fine. — Christoph, May 12 '17 at 15:19
Possible duplicate of [Uncaught ReferenceError: $ is not defined](http://stackoverflow.com/questions/12419724/uncaught-referenceerror-is-not-defined) — Christoph, May 12 '17 at 15:21

Nebojsa Nebojsa · Answer 1 · 2017-05-12T15:59:11.777

2

Juste replace jQuery part with plain JavaScript

Instead of this content += $('#' + activeTab).html();
Use this content += document.getElementById('activeDisTab').value;

edited May 12 '17 at 15:59

answered May 12 '17 at 15:22

Nebojsa Nebojsa

now I am getting Uncaught TypeError: Cannot read property 'innerHTML' of null – sam May 12 '17 at 15:50
Sorry, my mistake, it is `value` not `innerHTML`, I have edited my answer – Nebojsa Nebojsa May 12 '17 at 16:00

1 Answers1