Check if array key equals certain value JavaScript

Question

I have this array:

var arr = [
    ['First', 'lorem ipsum'],
    ['Second', 'dolor sit amet'],
];

and I want if arr[0] equals First do action 1, else do action 2.

I used:

for (var i = 0; i < markers.length; i++) {
    var arr = markers[i];
    var marker = new google.maps.Marker({
        map: map,
        if(arr[0] == 'Lorem') {
                icon: 'http://imgur.com/1.png',
                }
        else {
            icon: 'http://imgur.com/2.png',
            }
    });

    var contentString = '';

    google.maps.event.addListener(marker, "click", function () {
        infowindow.setContent(this.html);
        infowindow.open(map, this);
    });
}

but I get Uncaught SyntaxError: Unexpected token [.

How should I do this?

can you post you full code, it seems like the error is not related to the code you posted. — Adi Darachi
– Adi Darachi, Commented Dec 5, 2015 at 12:41
The posted code has several syntax errors. You can't use an if statement in an object literal. — Ram
– Ram, Commented Dec 5, 2015 at 12:49

Ram · Accepted Answer · 2015-12-05 13:05:50Z

1

You can't use an if statement in an object literal. The code has several syntax errors.

You can define a variable that refers to the object and conditionally add the property to it:

var obj = {
   map: map
};

if ( condition ) {
   obj.icon = 'http://imgur.com/1.png';
} else {
   obj.icon = 'http://imgur.com/2.png';
}

var marker = new google.maps.Marker(obj);

Another option is using a ternary operator:

var marker = new google.maps.Marker({
    map: map,
    icon: arr[0] == 'Lorem' ? 'http://imgur.com/1.png' : 'http://imgur.com/2.png'
});

edited Dec 5, 2015 at 13:05

answered Dec 5, 2015 at 12:54

Ram

145k16 gold badges174 silver badges201 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

wavix Over a year ago

Thank you. Is it possible with multiple if statements?

Ram Over a year ago

@wavix You are welcome. Yes, it is possible. I have updated the answer.

Collectives™ on Stack Overflow

Check if array key equals certain value JavaScript

1 Answer 1

2 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

2 Comments

Your Answer

Sign up or log in

Post as a guest

Related