JavaScript calculating length of a string

Question

Why when I try this block of code:

var str = "1234";
alert(str.toString().lenght);

it alerts me 'undefined' ?

dlev · Accepted Answer · 2011-08-23 18:56:15Z

7

You misspelled length. It's "length":

str.toString().length

You don't actually need the toString() call here, though. "1234" is already a string, so str.length works as well.

answered Aug 23, 2011 at 18:56

dlev

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2 Comments

Marc B Over a year ago

Ah. dyslexic moments are always such fun. i always type "ponit" instead of "point" for some reason. usually I catch them...

dlev Over a year ago

I edited, but my post initially read "You mispelled". Oops.

Andrew Kloos · Accepted Answer · 2011-08-23 18:57:16Z

1

correct your spelling...

alert(str.toString().lengTH);

Andrew

answered Aug 23, 2011 at 18:57

Andrew Kloos

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Comments

Matthew · Accepted Answer · 2011-08-23 18:57:17Z

1

You have a spelling mistake in that code. It's length not lenght.

But aside from that, there's no need to call toString(). str.length is fine.

answered Aug 23, 2011 at 18:57

Matthew

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Comments

mamoo · Accepted Answer · 2011-08-23 18:57:41Z

0

Just a typo: it's .length ;)

answered Aug 23, 2011 at 18:57

mamoo

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