Executing dynamically generated Jquery code

Question

Can any body please tell me the difference between

$(".level3_td[data-levelid=" + 01 + "]") and
$(".level3_td[data-levelid=01]")

I am dynamically generating $(".level3_td[data-levelid=" + 01 + "]") but it doesn't seem to find the item that I am trying to find. Then I tried to paste it in the console and found that it wasn't able to find the DOM object. After that I tried the 2nd one by hard coding $(".level3_td[data-levelid=01]") and it worked.

Can anybody please tell me what's the difference between both of these and how may I get the first one to work?

Surely 01 will result in levelid=1. Leading zeros are not a component of an integral number. — Grant Thomas
– Grant Thomas, Commented Sep 19, 2013 at 14:20

Julio · Accepted Answer · 2013-09-19 14:20:44Z

6

Your 01 is getting converted into a 1, dropping the 0. You'll need to tell Javascript that you want to treat the 01 as a string by wrapping it in quotes. Something like:

$(".level3_td[data-levelid=" + "01" + "]")

So in reality, your code is attempting to access $(".level3_td[data-levelid=1]") which most likely does not exist.

answered Sep 19, 2013 at 14:20

Julio

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2 Comments

Kamran Ahmed Over a year ago

Thanks but in case when 01 is being generated by a variable, how may I get this to work?

Julio Over a year ago

@KamranAhmed There's no built in functionality, to the best of my knowledge, for zero padding out an integer like that. You're going to have to roll your own: jsfiddle.net/qQUfX

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