How can i choose a property with the name of the property in form of a string?

Question

I have a class "Imgs" with many different properties. And i have a variable with a string which is the name of 1 property. Now i want to make a loop for an array (pictures) which consists of many "Imgs" and want to use the property from the string.

This shows what i want, but it does not work of course ;/

Edit: Of course there ist a .xyz property for "Imgs" and many others but that doesnt matter for this example.

var property = "xyz";

for (i in pictures) {
    if (pictures[i].property) { . . . }
}

greetings, I appreciate your help

Duplicate of http://stackoverflow.com/questions/4255472/javascript-object-access-variable-property-by-name-as-string — JustcallmeDrago, Apr 11 '14 at 22:20
sry i had no idea how to search for that (afterward stupid) question :D i tried but failed — easyX, Apr 11 '14 at 22:27

score 0 · Answer 1 · answered Apr 11 '14 at 22:18

0

You'll want to use the index notation

var property = "xyz";

for (i in pictures) {
    if (pictures[i][property]) { . . . }
}

or

for (i in pictures) {
    if (pictures[i]['xyz']) { . . . }
}

answered Apr 11 '14 at 22:18

phuzi

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score 0 · Accepted Answer · answered Apr 11 '14 at 22:18

0

Try bracket notation:

var property = "xyz";
for (i in pictures) {
    if (pictures[i][property]) { . . . }
}

Bracket notation allows you to access a property by string containing its name.

It's the same you were using to iterate pictures: pictures[i].

answered Apr 11 '14 at 22:18

Oriol

274,082
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baduum . . . that's it of course :D thx (sry i am still learning and sometimes .. mhh) – easyX Apr 11 '14 at 22:28

score 0 · Answer 3 · answered Apr 11 '14 at 22:19

0

You can use bracket notation:

if (pictures[i][property]) { ... }

answered Apr 11 '14 at 22:19

JustcallmeDrago

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How can i choose a property with the name of the property in form of a string?

3 Answers3