Split object into 2 arrays javascript

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I've got an object like that

 obj =   {
    'baz':1,
    'foo':7,
    'zap':12,
    'qax':15
    }

I need to split it into 2 arrays

arr1 = ['baz', 'foo', 'zap', 'qax']
arr2 = [1, 7, 12, 15]

Here is the simplest way:-

var arr1 = Object.keys(obj);
var arr2 = Object.values(obj);

for more please go Standard built-in objects

[ JavaScript ] Splice, Slice, Split - Jean Pan, Splice, Slice, Split … they all start with S … Splice and Slice are almost twin … for with slice(2, 3), we extract one piece of pizza starting from second piece to The split() method splits a String object into an array of strings by separating the  JavaScript arrays. The JavaScript array is an object that allows you to store multiple values within a single array object. Arrays can contain more than one variable or value at a time. The size of the array is unlimited and new items can be added to an array or removed from the array.

The simplest & most elegant way to do this:

var arr1 = Object.keys(obj);
var arr2 = arr1.map(function (k) {
    return obj[k];
});

how to split a js object into an array of key-value pairs? : javascript, var myObject = { X:1, Y:2, Z:3 }. Let's say I want to create a for loop to process each property on the object. The code below is just intended to be some pseudocode  split() is a method of String Object. It splits a string by separator into a new array. It splits a string by separator into a new array. String.prototype.split()

 obj =   {
    'baz':1,
    'foo':7,
    'zap':12,
    'qax':15
    }

var arr1 = [];
var arr2 = [];

for (var prop in obj) {
   arr1.push(prop);
   arr2.push(obj[prop]);
}

Split an array into chunks in JavaScript, array in JavaScript ? How to Sort/Order keys in JavaScript objects ? Example​-2: This example uses the splice() method to split the array into chunks of array. The latter looks like an Array but is not, so most Array methods don't work. Other than that, whether the Array contains objects or is used within JSON, it is an Array and you can thus use standard methods like splice() on them to split them. I mention this because you specifically wrote JSON object array.

The simplest way - iterate over object properties(key, value)

obj =   {
    'baz':1,
    'foo':7,
    'zap':12,
    'qax':15
    }

var a = [];
var b = [];
for(var i in obj){
  if(obj.hasOwnProperty(i)){
    a.push(i);
    b.push(obj[i]);
  }
}

console.log(a);
console.log(b);

What is the best way to split an array in JavaScript?, The best way to do what you want - iterate over an array and output it to the Document Object Model (DOM) - is to use a JavaScript template engine. don't use new Array() - there's much more convenient array literal syntax with [1, 2, 3] that  The split () method is used to split a string into an array of substrings, and returns the new array. Tip: If an empty string ("") is used as the separator, the string is split between each character. Note: The split () method does not change the original string. Browser Support. string .split ( separator, limit) Parameter Values.

You can loop over properties and add properties to arr1 and values to arr2. You can use this code to achieve that:

var obj = { 'baz':1, 'foo':7, 'zap':12, 'qax':15 };
var arr1 = [];
var arr2 = [];
for(var propertyName in obj) {    // loop through properties
    arr1.push(propertyName);
    arr2.push(obj[propertyName]);
}
console.log(arr1);   // prints ["baz", "foo", "zap", "qax"]
console.log(arr2);   // prints [1, 7, 12, 15]

Array.prototype.slice(), 2. ​. 3. console.log(animals.slice(2));. 4. // expected output: Array ["camel", "duck"​, Both the original and new array refer to the same object. The split() method divides a String into an ordered set of substrings, puts these substrings into an array, and returns the array. The division is done by searching for a pattern; where the pattern is provided as the first parameter in the method's call.

array_chunk - Manual, array_chunk — Split an array into chunks of split lists -- a useful procedure for "​chunking" up objects or text items into <?php $array = [1, 2, 3, 4, 5, 6, 7, 8, 9]; The concat () method is used to join two or more arrays. This method does not change the existing arrays, but returns a new array, containing the values of the joined arrays. Browser Support. The numbers in the table specify the first browser version that fully supports the method. array1 .concat ( array2, array3, , arrayX) Parameter Values.

Useful Javascript Array and Object Methods, Create an array that adds a $ to the beginning of each number. const numbers = [​2, 3, 4, 5]; const dollars = numbers.map( number => '$' +  Here are 2 ways to combine your arrays and return a NEW array. I like using the Spread operator. But if you need older browser support, you should use Concat. Alternatively, you can also write the concat method, in this regard: As you can see, this way of writing it doesn't manipulate or change the existing array. Which one should I pick?

Array methods, The arrays are objects, so we can try to use delete : let arr = 'Bilbo, Gandalf, Nazgul, Saruman' . split ( ', ' , 2 ) ; alert ( arr ) ; // Bilbo, Gandalf. I would like to be able to get 2 arrays from this input given the condition that one array has to contain names starting with 'j' and are 4 chars long and another containing names that are exactly 3 chars long and starts with 'b'. so I would end up with ["jane", "john"] and ["bob"]. The resulting arrays can be wrapped in an array or an object

Comments
  • Duplicate of this and this and many others.
  • Should be noted that this method is not supported in some browsers: Support
  • don't you think elegant is a matter of opinion?
  • @bhspencer: perhaps, but by elegant I am referring to the shortness of it.
  • It might not work as expected, since looping order of object keys is implementation dependent
  • True but the index of the key and the index of the value will match in the output arrays.
  • I don't think hasOwnProperty check is necessary when using an object literal stackoverflow.com/questions/11313982/…