CODEWITHSUNDEEP
javascriptonloaddomexceptionyahoo-analytics
Hubro
Hubro

Reputation: 59383

Why does chrome throw "Uncaught Error: NOT_FOUND_ERR: DOM Exception 8" here?

Below is the code for my YWA wrapper

var astr_ywascript = (document.createElement("script").type = "text/javascript").src = "http://d.yimg.com/mi/eu/ywa.js";
document.head.appendChild(astr_ywascript); // <- error on this line

It's run on page load, so it makes no sense that JS can't find the document head tag.

Any ideas?

Thanks

Opera throws this error on the same line. Uncaught exception: Error: WRONG_ARGUMENTS_ER Firebug says: document.head is undefined [Break On This Error] document.head.appendChild(astr_ywascript);

Upvotes: 20

Views: 42264

Answers (3)

Grallen
Grallen

Reputation: 1670

Just appending this answer for people who might hit this page like I did while searching for an answer to a “Uncaught Error: NOT_FOUND_ERR: DOM Exception 8 error.

I had this error in Chrome. In my case I was using .appendChild(ttt);

The issue was that ttt was an array object instead of the div I intended to append.

So make sure what you are appending is actually a DOM object and not accidentally a different object type.

Upvotes: 0

Jeff Dickey
Jeff Dickey

Reputation: 5034

I got this error with Backbone.js because I was doing:

$('#backbone').html(@view.render())

Instead of

$('#backbone').html(@view.render().el)

Like I should have done. Still don't really know what this 'el' business is, but I'm sure I'll figure it out soon.

Upvotes: 8

spender
spender

Reputation: 120498

In the line 

(document.createElement("script").type = "text/javascript").src

you are setting the src property of a string. The assignment in parentheses returns the assigned value. You make the same mistake later in the line, ultimately assigning "http://d.yimg.com/mi/eu/ywa.js" to astr_ywascript

Split it out onto separate lines:

var el=document.createElement("script");
el.type="text/javascript"
el.src=...
document.head.appendChild(el);

Raw Javascript rarely behaves in the fluid way one gets used to with jQuery.

You might also want to get the head as follows:

document.getElementsByTagName("head")[0]

Upvotes: 16

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