if(criteria) Last updated: 17. Oct 2026

Evaluates a condition and runs code if it is true. The condition uses standard JavaScript truthiness: false, 0, NaN, "" (empty text), null and undefined are false; everything else — including "0", "false", [] and — is true.

Parameters

Name	Type	Description
criteria	bool	Bool statement or value to evaluate.

Returns

Nothing

Example

Data

{
    "value1" : true,
    "value2" : false
}

Code example (#JS)

#JS is mixed HTML (or other text file) with inline JavaScript with # starting and ending each inline statement.

#if(value1) {#
<b>If condition content</b>
#} else {#
<i>Else content</i>
#}#

Output

The #JS code above produces the output shown below:

<b>If condition content</b>

Code example (JS)

JS is normal JavaScript either running in the browser or on the Docly™ server.

write("Test 1: ");
if(value1) write("true");

write("\r\r");
write("Test 2: ");
if (value2) write("true"); else write("false");

Output

The JS code above produces the output shown below:

Test 1: true

Test 2: false