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Tuesday, December 13, 2022

[FIXED] What is "?:" notation in JavaScript?

 December 13, 2022     coding-style, javascript, notation, operators, syntax     No comments   

Issue

I found this snippet of code in my travels in researching JSON:

var array = typeof objArray != 'object' ? JSON.parse(objArray) : objArray;

I'm seeing more and more of the ? and : notation. I don't even know what it is called to look it up! Can anyone point me to a good resource for this? (btw, I know what != means).


Solution

It's called a Conditional (ternary) Operator. It's essentially a condensed if-else.

So this:

var array = typeof objArray != 'object' ? JSON.parse(objArray) : objArray;

...is the same as this:

var array;
if (typeof objArray != 'object') {
    array = JSON.parse(objArray);
} else {
    array = objArray;
}


Answered By - Matt Huggins
Answer Checked By - Mildred Charles (PHPFixing Admin)
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