Javascript, convert a list of objects into an array? [duplicate] - javascript

This question already has answers here:
Converting JavaScript object with numeric keys into array
(17 answers)
Closed 6 years ago.
I have this:
How do I turn this into an array?

Object.keys(mounted).map((key) => mounted[key])

Related

cannot print component in array in javascript [duplicate]

This question already has answers here:
How can I access and process nested objects, arrays, or JSON?
(31 answers)
How do I reference a JavaScript object property with a hyphen in it?
(11 answers)
Closed 2 months ago.
i'm just a newbie on javascript , please help me this
var arr = [{"student-name":"Harry Potter","discipline":"Magic"}] ;
how can i get "Harry Potter" in this array , thanks for helping

JavaScript hash of Arrays [duplicate]

This question already has answers here:
How do I loop through or enumerate a JavaScript object?
(48 answers)
Closed 4 years ago.
I have such type of array
How to access Viena
There could be a lot of cities
[{"Viena":[{"date":"2018-11-10","time":"17:45","price":599,"to_city":"Viena","wday":"saturday"},{..},{..}],{"Paris":[{..}]} ]
You can use Array.filter for this.
var data = [{"Viena":[{"date":"2018-11-10","time":"17:45","price":599,"to_city":"Viena","wday":"saturday"}]},{"Paris":[{"date":"2018-11-10","time":"17:45","price":599,"to_city":"Viena","wday":"saturday"}]}];
var result = data.filter(function(value){return Object.keys(value).indexOf("Viena") != -1;});
console.log(result[0]);

Change values in array to a certain pattern [duplicate]

This question already has answers here:
jQuery sort array value in sequence
(1 answer)
Sorting javascript array using function 'sort"
(3 answers)
Closed 5 years ago.
Just wondering, what is the best way to go about "sorting" an array to the following:
I have the array as [1,1,1,1,2,2,2,2], how would I sort it so it goes:
[1,2,1,2,1,2,1,2]
I cannot think of the phrase or a method to do this.
This is done in angularjs/can use jquery.

How do we find the length of an object in Javascript? [duplicate]

This question already has answers here:
Length of a JavaScript object
(43 answers)
Closed 6 years ago.
I dont see how we can find the length of an object. For arrays i can your array.length but it doesnt work for objects, any suggestions?
Thanks!
Just like that:
Object.keys(objectName).length;

How to combine 2 array to an Object? [duplicate]

This question already has answers here:
Merge keys array and values array into an object in JavaScript
(14 answers)
Closed 8 years ago.
I have 2 arrays which are the same length like this:
$scope.access_name = ['group1','group2','group3','group4']
access_value=[1,2,1,3]
How can I combine to have result like this:
object_access = {'group1:1','group2:2','group3:1','group4:3'}
thankyou very much
var object_access={};
for(int i=0;i<access_value.length;i++)
{
object_access[$scope.access_name[i]]=access_value[i];
}

Categories