Is there a ? conditional test in Javascript like in C#?

Question

I have the following:

var isChecked = $('#htmlEdit').is(":checked");

But I don't really need the variable isChecked and what I want to do is to assign a value to a variable called "action" so that if the test on the right above is true then

var action = "Editing HTML"

if not then

var action = "Editing"

Is there a clean way to do this without just using an if-else?

Did you try the C# conditional syntax in JavaScript?

casablanca
– casablanca

2012-03-03 09:32:32 +00:00
Commented Mar 3, 2012 at 9:32 — casablanca
– casablanca, Commented Mar 3, 2012 at 9:32

Didier Ghys · Accepted Answer · 2012-03-03 09:48:43Z

7

Yes there is:

var action = $('#htmlEdit').is(":checked") ? "Editing HTML" : "Editing";

Conditional operator on MDN

edited Mar 3, 2012 at 9:48

answered Mar 3, 2012 at 9:32

Didier Ghys

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2 Comments

Jessica Over a year ago

Thanks so much. I didn't realize I could do the same as C#.

Didier Ghys Over a year ago

Glad it helped. I have added a link for documentation. You could also check the list of Expressions and Operators.

Jon Skeet · Accepted Answer · 2012-03-03 09:32:27Z

3

Yes, Javascript has a conditional operator. You should be able to write:

var action = $('#htmlEdit').is(":checked") ? "Editing HTML" : "Editing";

(Did you try this before asking the question?)

answered Mar 3, 2012 at 9:32

Jon Skeet

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Comments

Tim M. · Accepted Answer · 2012-03-03 09:50:22Z

2

var result = someCondition == true ? "state 1" : "state 2";

// the first operand must evaluate to a boolean
var result = someCondition ? "state 1" : "state 2"; // shortened
var result = a == b ? "state 1" : "state 2"; // arbitrary condition

This is the ternary operator and behaves the same in JavaScript as most/all c-style languages.

edited Mar 3, 2012 at 9:50

answered Mar 3, 2012 at 9:32

Tim M.

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Comments

Alexander Pavlov · Accepted Answer · 2012-03-03 09:33:22Z

1

var action = isChecked ? "Editing HTML" : "Editing";

answered Mar 3, 2012 at 9:33

Alexander Pavlov

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1 Comment

sinemetu1 Over a year ago

OP says that he doesn't really need the var isChecked.

linuxeasy · Accepted Answer · 2012-03-03 09:41:36Z

0

? is also called as ternary operator.

This is more of a language construct, rather than a Framework stuff.

C# is a language and Jquery is a framework build on Javascript (a language).

And Javascript language and most of the languages (C, C++, C#, Java, Javascript) support this operator.

answered Mar 3, 2012 at 9:41

linuxeasy

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Comments

anantkpal · Accepted Answer · 2012-03-03 09:43:53Z

0

Yes you can use conditional operator:

var variableToBeAssigned = conditiontoBechecked ? valueTobeAssignedONSucessOfCondition : valueToBeassignedONFailureOfCondition;

In your case, you can just use:

var action = $('#htmlEdit').is(':checked') ? 'Editing HTML' : 'Editing';

answered Mar 3, 2012 at 9:43

anantkpal

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