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Answer by iRohitBhatia for Iterate through object properties

While the top-rated answer is correct, here is an alternate use case i.e if you are iterating over an object and want to create an array in the end. Use .map instead of forEach const newObj =...

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Answer by Dimitar Nikovski for Iterate through object properties

To add ES2015's usage of Reflect.ownKeys(obj) and also iterating over the properties via an iterator. For example: let obj = { a: 'Carrot', b: 'Potato', Car: { doors: 4 } }; can be iterated over by //...

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Answer by Fellow Stranger for Iterate through object properties

Object.keys(obj).forEach(key => console.log(`key=${key} value=${obj[key]}`) );

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Answer by Cyril N. for Iterate through object properties

Dominik's answer is perfect, I just prefer to do it that way, as it's cleaner to read: for (var property in object) { if (!object.hasOwnProperty(property)) continue; // Do stuff... }

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Answer by dylanh724 for Iterate through object properties

The above answers are a bit annoying because they don't explain what you do inside the for loop after you ensure it's an object: YOU DON'T ACCESS IT DIRECTLY! You are actually only delivered the KEY...

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Answer by JSON C11 for Iterate through object properties

If your environment supports ES2017 then I would recommend Object.entries: Object.entries(obj).forEach(([key, value]) => { console.log(`${key} ${value}`); }); As shown in Mozillas Object.entries()...

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Answer by Konrad Kiss for Iterate through object properties

To further refine the accepted answer it's worth noting that if you instantiate the object with a var object = Object.create(null) then object.hasOwnProperty(property) will trigger a TypeError. So to...

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Answer by Justin for Iterate through object properties

If running Node I'd recommend: Object.keys(obj).forEach((key, index) => { console.log(key); });

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Answer by Philll_t for Iterate through object properties

let obj = {"a": 3, "b": 2, "6": "a"} Object.keys(obj).map((item) => {console.log("item", obj[item])}) // a // 3 // 2

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Answer by Frank Roth for Iterate through object properties

Girls and guys we are in 2019 and we do not have that much time for typing... So lets do this cool new fancy ECMAScript 2016: Object.keys(obj).forEach(e => console.log(`key=${e} value=${obj[e]}`));

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Answer by viktarpunko for Iterate through object properties

You can use Lodash. The documentation var obj = {a: 1, b: 2, c: 3}; _.keys(obj).forEach(function (key) { ... });

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Answer by user663031 for Iterate through object properties

In up-to-date implementations of ES, you can use Object.entries: for (const [key, value] of Object.entries(obj)) { } or Object.entries(obj).forEach(([key, value]) => ...) If you just want to iterate...

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Answer by Redu for Iterate through object properties

Nowadays you can convert a standard JS object into an iterable object just by adding a Symbol.iterator method. Then you can use a for of loop and acceess its values directly or even can use a spread...

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Answer by HovyTech for Iterate through object properties

You basically want to loop through each property in the object. JSFiddle var Dictionary = { If: { you: { can: '', make: '' }, sense: '' }, of: { the: { sentence: { it: '', worked: '' } } } }; function...

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Answer by Rob Sedgwick for Iterate through object properties

jquery allows you to do this now: $.each( obj, function( key, value ) { alert( key + ": " + value ); });

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Answer by Faiz Mohamed Haneef for Iterate through object properties

Here I am iterating each node and creating meaningful node names. If you notice, instanceOf Array and instanceOf Object pretty much does the same thing (in my application, i am giving different logic...

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Answer by Ondrej Svejdar for Iterate through object properties

Also adding the recursive way: function iterate(obj) { // watch for objects we've already iterated so we won't end in endless cycle // for cases like var foo = {}; foo.bar = foo; iterate(foo); var...

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Answer by Jadiel de Armas for Iterate through object properties

I want to add to the answers above, because you might have different intentions from Javascript. A JSON object and a Javascript object are different things, and you might want to iterate through the...

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Answer by Vappor Washmade for Iterate through object properties

The for...in loop represents each property in an object because it is just like a for loop. You defined propt in the for...in loop by doing: for(var propt in obj){ alert(propt + ': ' + obj[propt]); } A...

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Answer by Raman Sohi for Iterate through object properties

What for..in loop does is that it creates a new variable (var someVariable) and then stores each property of the given object in this new variable(someVariable) one by one. Therefore if you use block...

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Answer by Danny R for Iterate through object properties

As of JavaScript 1.8.5 you can use Object.keys(obj) to get an Array of properties defined on the object itself (the ones that return true for obj.hasOwnProperty(key))....

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Answer by Dominik for Iterate through object properties

Iterating over properties requires this additional hasOwnProperty check: for (var prop in obj) { if (Object.prototype.hasOwnProperty.call(obj, prop)) { // do stuff } } It's necessary because an...

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Answer by user920041 for Iterate through object properties

Objects in JavaScript are collections of properties and can therefore be looped in a for each statement. You should think of obj as an key value collection.

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Answer by arb for Iterate through object properties

Your for loop is iterating over all of the properties of the object obj. propt is defined in the first line of your for loop. It is a string that is a name of a property of the obj object. In the first...

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Answer by Matt Ball for Iterate through object properties

It's just a for...in loop. Check out the documentation at Mozilla.

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Answer by Marc B for Iterate through object properties

It's the for...in statement (MDN, ECMAScript spec). You can read it as "FOR every property IN the obj object, assign each property to the PROPT variable in turn".

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Iterate through object properties

var obj = { name: "Simon", age: "20", clothing: { style: "simple", hipster: false } } for(var propt in obj){ console.log(propt + ': ' + obj[propt]); } How does the variable propt represent the...

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Answer by Fouad Boukredine for Iterate through object properties

if(Object.keys(obj).length) { Object.keys(obj).forEach(key => { console.log("\n" + key + ": " + obj[key]); }); } // *** Explanation line by line *** // Explaining the bellow line // It checks if obj...

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Answer by Kamil Kiełczewski for Iterate through object properties

Check typeYou can check how propt represent object propertis bytypeof proptto discover that it's just a string (name of property). It come up with every property in the object due the way of how for-in...

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Answer by Sunny for Iterate through object properties

You can access the nested properties of object using for...in and forEach loop.for...in:for (const key in info) { consoled.log(info[key]);}forEach:Object.keys(info).forEach(function(prop) {...

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Answer by danday74 for Iterate through object properties

If you just want to iterate to map property values then lodash has _.mapValuesconst obj = { a: 2, b: 3}const res = _.mapValues(obj, v => v * 2)console.log(res)<script...

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Answer by NoWhere Man for Iterate through object properties

Simple and clear way to reach this, im modern JS without iterate the prototypes, is like this:Object.prototype.iterateProperties = ((callback) => { Object.keys(obj).filter(key =>...

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Answer by Isaac Sichangi for Iterate through object properties

If you have an array of objects with their properties e.glet students = [{name:"John", gender:"male", yob:1991},{name:"Mary", gender:"female", yob:1994} ]You can iterate over the properties in 2...

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