Javascript Function is treating my string argument like an integer

Question

I have a javascript function that contains an argument.

<a href="#" onclick="changeAvatar(0684839741);">Click here</a>

I need that argument to be a string because sometimes there will be Letters or a Leading 0 that I will need to preserve like in this example.

I checked to make sure that the argument that is passed in is a string with

x.constructor === String

But in my changeAvatar function, the argument comes through as no longer a string. Instead it is a number and removes the leading zero or breaks if it contains a letter.

How do I get the argument to retain it's type?

Have you tried adding single quote marks (apostrophes) around your argument? — jwheron
– jwheron, Commented Dec 21, 2011 at 0:14

jfriend00 · Accepted Answer · 2011-12-21 00:19:08Z

9

You've typed it as a javascript number as this line of javascript evaluates it to a number:

changeAvatar(0684839741);

If you want it to be a string, you have to do it this way where you explicitly declare it as a string like:

changeAvatar('0684839741');

which means the whole line should be this:

<a href="#" onclick="changeAvatar('0684839741');">Click here</a>

edited Dec 21, 2011 at 0:19

answered Dec 21, 2011 at 0:14

jfriend00

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Comments

Uladzimir Pasvistselik · Accepted Answer · 2011-12-21 00:15:29Z

2

Add single quotes:

<a href="#" onclick="changeAvatar('0684839741');">Click here</a>

answered Dec 21, 2011 at 0:15

Uladzimir Pasvistselik

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