Javascript/jquery append a variable with a string

Question

I have searched around and don't think I am asking a duplicated question, if I am, I'll delete immediately.

I have this:

$('#dti').text(result3.toFixed(2));

The question is how do I append this with '%'

I am hardcoding a % sign in now but it shows even if there is no value...

What do you mean by no value? Is it 0 or null or an empty string? — ShankarSangoli
– ShankarSangoli, Commented Jan 20, 2012 at 22:20
@ShankarSangoli - A TypeError would be thrown if result3 was anything other than a number, and if it was 0 it would return 0.00, so I don't think it could ever be "empty" really. — James Allardice
– James Allardice, Commented Jan 20, 2012 at 22:23
TJ might not have looked at the error console before posting, there might still be an error there. — Douglas
– Douglas, Commented Jan 20, 2012 at 22:25
@JamesAllardice - That is correct. We don't know the possible values of result3 that is why I have asked a question to OP. You can see it up there. — ShankarSangoli
– ShankarSangoli, Commented Jan 20, 2012 at 22:26
@ShankarSangoli - Yeah, I know, my comment was meant more as a complement to yours than an argument against it. The question can't really be answered effectively until the question is cleared up. — James Allardice
– James Allardice, Commented Jan 20, 2012 at 22:27

ShankarSangoli · Accepted Answer · 2012-01-20 22:28:12Z

2

$('#dti').text(result3.toFixed(2) + (result3?"%":""));

If result3 can never be emtpy or null but a value >= 0 and you don't want to show 0% then you can try this

$('#dti').text(result3 ? (result3.toFixed(2) + "%") : "");

answered Jan 20, 2012 at 22:18

ShankarSangoli

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3 Comments

(false).toFixed(2) would throw an error, so the check in the second half of the snippet won't work.

@Douglas - That is why I have asked question to OP in the questions comment section. Based on that we can check the null or other condition

Now we don't know if restult3 is 0 whether OP wants to show % or not.

Jivings · Accepted Answer · 2012-01-20 22:20:50Z

1

How about:

$('#dti').text(num = result3.toFixed(2) ? num + '%' : '');

answered Jan 20, 2012 at 22:20

Jivings

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