If one want to append to this type of array:
array = ["one","two","three"];
so it becomes,
array = ["one","two","three, "four"];
use:
array.push("four");
but how do you append here:
object = {element1: one, element2: two, array: ["one","two","three"]};
so it becomes,
object = {element1: one, element2: two, array: ["one","two","three,"four"]};
Ashish Bahl
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3 Answers 3
You still use push(), but on the array property of your object:
var obj = {
element1: 1,
element2: 2,
array: ["one", "two", "three"]
};
obj.array.push('four');
console.log(obj);
answered Mar 2, 2017 at 9:48
Rory McCrossan
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6 Comments
haz
supposing instead of var obj we have jQuery.obj ?
Rory McCrossan
What do you mean by
jQuery.obj?haz
jQuery.obj = { element1: 1, ... }
Rory McCrossan
Then use
jQuery.obj.array.push('four'); However you really, really should not be polluting the jQuery namespace with your own variables.haz
I did. I then get error: Reference Error: Cant find variable array
|
You can update an object in place like so:
let obj = {element1: 'one', element2: 'two', array: ["one","two","three"]};
obj.array.push('four');
If you want to create a new copy of the object with the extended array, you can also do the following using the new ES6 features:
let obj = {element1: 'one', element2: 'two', array: ["one","two","three"]};
let newObject = Object.assign({}, obj, { array: [...obj.array, 'four'] });
Using the second example, you keep the original object intact and create a new copy with the updated values.
answered Mar 2, 2017 at 9:49
Gorka Hernandez
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Comments
In your case the values one, two have to be strings, otherwise they will be treated as variables, and you can use push too for the object using object.array.push('four');:
var object = {
element1: "one",
element2: "two",
array: ["one", "two", "three"]
};
object.array.push('four');
console.log(object);
answered Mar 2, 2017 at 9:51
Ionut Necula
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lang-js