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Author Topic: if statements with javascript  (Read 641 times)

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Offline MDanzTopic starter

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if statements with javascript
« on: February 09, 2010, 06:08:59 AM »
is it possible to do...

if (javascript function)

??
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Offline MasterACE14

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Re: if statements with javascript
« Reply #1 on: February 09, 2010, 06:13:47 AM »
yes
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Offline MDanzTopic starter

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Re: if statements with javascript
« 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
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Offline Adam

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Re: if statements with javascript
« Reply #3 on: February 09, 2010, 07:01:44 AM »
Use the 'typeof' operator to check it's defined as a function:

Code: [Select]
if (typeof ChgTxt == 'function') {
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Offline yozyk

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Re: if statements with javascript
« 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.
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Offline Adam

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Re: if statements with javascript
« Reply #5 on: February 09, 2010, 10:42:18 AM »
Quote from: yozyk on February 09, 2010, 10:32:13 AM
It is necessary that the function returns the value.
Use return operator in function body.

... What?
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Offline yozyk

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Re: if statements with javascript
« 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!')
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Offline Adam

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Re: if statements with javascript
« 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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