Topic: if statements with javascript (Read 372 times)

MDanz · « **on:** February 09, 2010, 06:08:59 AM »

is it possible to do...

if (javascript function)

??

MasterACE14 · « **Reply #1 on:** February 09, 2010, 06:13:47 AM »

MDanz · « **Reply #2 on:** February 09, 2010, 06:19:10 AM »

how do i do it?

i have a javascript function called ChgTxt..

if(ChgTxt) {} lol

MrAdam · « **Reply #3 on:** February 09, 2010, 07:01:44 AM »

Use the 'typeof' operator to check it's defined as a function:

if (typeof ChgTxt == 'function') {

yozyk · « **Reply #4 on:** February 09, 2010, 10:32:13 AM »

It is necessary that the function returns the value.
Use return operator in function body.

MrAdam · « **Reply #5 on:** February 09, 2010, 10:42:18 AM »

It is necessary that the function returns the value.
Use return operator in function body.

... What?

yozyk · « **Reply #6 on:** February 09, 2010, 10:49:02 AM »

Code: (javascript) [Select]

function ChgTxt() {
  // your code
  return boolValue;
}

if(ChgTxt) alert('True!')
else alert('False!')

MrAdam · « **Reply #7 on:** February 09, 2010, 10:58:33 AM »

From the OP I got the impression he wanted to check if the function exists, you may be right.

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