converting a string into a js array

Question

I am probably doing a very small and fundamental mistake here. I am getting some information in the dom which exactly looks like this

<span id="pids" style="display:none">["26551826","22956811","22959266"]</span>

Which then I am trying to convert into a js array. For that I am doing this

var x = document.getElementById('pids');
var y = eval(x);

alert(y.length);

And the result is undefined. What am I doing wrong here?

Here is my fiddle

http://jsfiddle.net/sghoush1/sbrmT/2/

Royi Namir · Accepted Answer · 2014-03-16 20:26:01Z

2

Try this : http://jsfiddle.net/sbrmT/3/

var x = document.getElementById('pids').innerText; //you need to get the value
var y = JSON.parse(x); //dont use eval , json.parse will do.

alert(y.length);

answered Mar 16, 2014 at 20:26

Royi Namir

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1 Comment

RobG Over a year ago

innerText is an IE property copied by some, but not all, browsers. The standards–compliant equivalent is textContent. But since old IE doesn't support textContent, do something like var el = document.getElementById('pids'); var x = el.textContent || el.innerText;.

Kamehameha · Accepted Answer · 2014-03-16 20:26:58Z

0

Try this -

var x = document.getElementById('pids').innerHTML;

answered Mar 16, 2014 at 20:26

Kamehameha

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Comments

rsvpilot · Accepted Answer · 2014-03-16 20:38:08Z

0

http://jsfiddle.net/8vS2D/

var x = document.getElementById('pids');
var y = eval(x);

alert(eval(x.innerText));

answered Mar 16, 2014 at 20:38

rsvpilot

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