Clever Geek Handbook

How do I convert an object to an array in JavaScript?

When I console.log on a variable called "source" I get this:

[Object {
    name = "Yahoo", value = "yahoo"
},
Object {
    name = "yahtzee", value = "yahtzee"
},
Object {
    name = "Yakov Smirnoff", value = "yakov-smirnoff"
},
Object {
    name = "Yarbrough", value = "yarbrough"
},
Object {
    name = "yard sales", value = "yard-sales"
},
Object {
    name = "yarmulke", value = "yarmulke"
},
Object {
    name = "yawning", value = "yawning"
},
Object {
    name = "Yeah Yeah Yeahs", value = "yeah-yeah-yeahs"
},
Object {
    name = "Yeardly Smith", value = "yeardly-smith"
},
Object {
    name = "YearOne", value = "yearone"
},
Object {
    name = "Yeasayer", value = "yeasayer"
},
Object {
    name = "yelle", value = "yelle"
},
Object {
    name = "yelling", value = "yelling"
},
Object {
    name = "yellowpages", value = "yellowpages"
},
Object {
    name = "yellowstone", value = "yellowstone"
},
Object {
    name = "yemen", value = "yemen"
},
Object {
    name = "Yeoman", value = "yeoman"
},
Object {
    name = "Yes Dear", value = "yes-dear"
},
Object {
    name = "Yes Men", value = "yes-men"
},
Object {
    name = "yeti", value = "yeti"
},
Object {
    name = "yiddish", value = "yiddish"
},
Object {
    name = "ymca", value = "ymca"
},
Object {
    name = "yodeling", value = "yodeling"
},
Object {
    name = "yoga", value = "yoga"
},
Object {
    name = "yogurt", value = "yogurt"
},
Object {
    name = "Yoko Ono", value = "yoko-ono"
},
Object {
    name = "Yo-Landi Vi$$er", value = "yo-landi-vier"
},
Object {
    name = "yo momma", value = "yo-momma"
},
Object {
    name = "YONKERS", value = "yonkers"
},
Object {
    name = "yosemite", value = "yosemite"
},
Object {
    name = "yoshimoto", value = "yoshimoto"
},
Object {
    name = "Yoshio Yoda", value = "yoshio-yoda"
},
Object {
    name = "you got served", value = "you-got-served"
},
Object {
    name = "YourDailyLaughz", value = "yourdailylaughz"
},
Object {
    name = "yourfavorite", value = "yourfavorite"
},
Object {
    name = "Yoursie Thomas", value = "yoursie-thomas"
},
Object {
    name = "You Suck at Photoshop", value = "you-suck-at-photoshop"
},
Object {
    name = "Youth in Revolt", value = "youth-in-revolt"
},
Object {
    name = "Youtube Next Lab", value = "youtube-next-lab"
},
Object {
    name = "YSAP", value = "ysap"
},
Object {
    name = "yt3d:aspect=16:9", value = "yt3daspect169"
},
Object {
    name = "yt3d:enable=true", value = "yt3denabletrue"
},
Object {
    name = "yt3d:metadata=user", value = "yt3dmetadatauser"
},
Object {
    name = "yt3d:swap=true", value = "yt3dswaptrue"
},
Object {
    name = "y tu mama tambien", value = "y-tu-mama-tambien"
},
Object {
    name = "YuGiOh", value = "yugioh"
},
Object {
    name = "Yugo Koral", value = "yugo-koral"
},
Object {
    name = "Yuri Baranovsky", value = "yuri-baranovsky"
},
Object {
    name = "Yvan Attal", value = "yvan-attal"
},
Object {
    name = "Yvette Nicole Brown", value = "yvette-nicole-brown"
},
Object {
    name = "yvonne de carlo", value = "yvonne-de-carlo"
}]

If I build it first before console.logging:

JSON.stringify(source);

I get:

[{
    "name": "Yahoo",
    "value": "yahoo"
}, {
    "name": "yahtzee",
    "value": "yahtzee"
}, {
    "name": "Yakov Smirnoff",
    "value": "yakov-smirnoff"
}, {
    "name": "Yarbrough",
    "value": "yarbrough"
}, {
    "name": "yard sales",
    "value": "yard-sales"
}, {
    "name": "yarmulke",
    "value": "yarmulke"
}, {
    "name": "yawning",
    "value": "yawning"
}, {
    "name": "Yeah Yeah Yeahs",
    "value": "yeah-yeah-yeahs"
}, {
    "name": "Yeardly Smith",
    "value": "yeardly-smith"
}, {
    "name": "YearOne",
    "value": "yearone"
}, {
    "name": "Yeasayer",
    "value": "yeasayer"
}, {
    "name": "yelle",
    "value": "yelle"
}, {
    "name": "yelling",
    "value": "yelling"
}, {
    "name": "yellowpages",
    "value": "yellowpages"
}, {
    "name": "yellowstone",
    "value": "yellowstone"
}, {
    "name": "yemen",
    "value": "yemen"
}, {
    "name": "Yeoman",
    "value": "yeoman"
}, {
    "name": "Yes Dear",
    "value": "yes-dear"
}, {
    "name": "Yes Men",
    "value": "yes-men"
}, {
    "name": "yeti",
    "value": "yeti"
}, {
    "name": "yiddish",
    "value": "yiddish"
}, {
    "name": "ymca",
    "value": "ymca"
}, {
    "name": "yodeling",
    "value": "yodeling"
}, {
    "name": "yoga",
    "value": "yoga"
}, {
    "name": "yogurt",
    "value": "yogurt"
}, {
    "name": "Yoko Ono",
    "value": "yoko-ono"
}, {
    "name": "Yo-Landi Vi$$er",
    "value": "yo-landi-vier"
}, {
    "name": "yo momma",
    "value": "yo-momma"
}, {
    "name": "YONKERS",
    "value": "yonkers"
}, {
    "name": "yosemite",
    "value": "yosemite"
}, {
    "name": "yoshimoto",
    "value": "yoshimoto"
}, {
    "name": "Yoshio Yoda",
    "value": "yoshio-yoda"
}, {
    "name": "you got served",
    "value": "you-got-served"
}, {
    "name": "YourDailyLaughz",
    "value": "yourdailylaughz"
}, {
    "name": "yourfavorite",
    "value": "yourfavorite"
}, {
    "name": "Yoursie Thomas",
    "value": "yoursie-thomas"
}, {
    "name": "You Suck at Photoshop",
    "value": "you-suck-at-photoshop"
}, {
    "name": "Youth in Revolt",
    "value": "youth-in-revolt"
}, {
    "name": "Youtube Next Lab",
    "value": "youtube-next-lab"
}, {
    "name": "YSAP",
    "value": "ysap"
}, {
    "name": "yt3d:aspect=16:9",
    "value": "yt3daspect169"
}, {
    "name": "yt3d:enable=true",
    "value": "yt3denabletrue"
}, {
    "name": "yt3d:metadata=user",
    "value": "yt3dmetadatauser"
}, {
    "name": "yt3d:swap=true",
    "value": "yt3dswaptrue"
}, {
    "name": "y tu mama tambien",
    "value": "y-tu-mama-tambien"
}, {
    "name": "YuGiOh",
    "value": "yugioh"
}, {
    "name": "Yugo Koral",
    "value": "yugo-koral"
}, {
    "name": "Yuri Baranovsky",
    "value": "yuri-baranovsky"
}, {
    "name": "Yvan Attal",
    "value": "yvan-attal"
}, {
    "name": "Yvette Nicole Brown",
    "value": "yvette-nicole-brown"
}, {
    "name": "yvonne de carlo",
    "value": "yvonne-de-carlo"
}]

Is there a way to convert the source to an array that looks like this:

["Yahoo", "yahtzee", "Yakov Smirnoff", etc...]

Basically I just want the "name", not the "value" and I want them all in one array. How can I do that?

+3


source to share


4 answers


Just use a simple loop:



var arr = [];
for (var i = 0; i < objects.length; i++) {
    arr.push(objects[i].name);
}
+7


source


As an alternative to the other answers, you can use Array.map . Note, however, that it is fairly new and not available in older browsers - I recommend es5-shim for that .

var names = source.map(function(item) { return item.name });


Update: As of ES6 it will look something like this:

const names = source.map(item => item.name)
+8


source


Your outer structure is an array containing a bunch of object literals. Push the property of name

each object literal to a new array through a simple loop.

var outArray = [];
for (i=0; i<inArray.length; i++ {
  outArray.push(inArray[i].name);
}

console.log(outArray);
+2


source 


var result = [];

for (var i in source)
  result.push(source[i].name);
0


source






More articles:


All Articles