I Have 2 array like this
arr = ["9138172", "9138214", "9138238"]
array = ["9138172", "9138238"]
how can I remove values in array from arr?
I want to obtain
arr = ["9138214"]
Maybe I can use splice() ?
3 Answers
You can use Array.forEach() to loop over to the array of items and then check that each item exist in array array. If so use splice(). Use simple function and indexOf() as it will work in old browsers and also in IE.
var arr = ["9138172", "9138214", "9138238"];
var array = ["9138172", "91382142"];
var i = arr.length;
while (i--) {
if (array.indexOf(arr[i]) !== -1) {
arr.splice(i, 1);
}
}
console.log(arr);3 Comments
Ankit Agarwal
@hoon1 you can tick mark the answer if it was helpful to you.
hoon1
btw if arr and array have a same value, why arr not have an empty array ?
Ankit Agarwal
@hoon1 in that case use a
while loop. Updated the answer.You can use .filter() for that.
Here is an example:
var arr = ["9138172", "9138214", "9138238"];
var array = ["9138172", "9138238"];
arr = arr.filter(e => !array.includes(e));
console.log(arr)The code above just filters the arr array and keeps only elements that are not present in the array. The .includes() function that I've used works on these arrays because they contain strings, if you're dealing with objects, you need to find some other way of checking if array contains the element.
Comments
If you want to lodash, this can be easily done by the difference function:
https://lodash.com/docs/4.17.10#difference
import {difference} from 'lodash';
arr = ["9138172", "9138214", "9138238"]
array = ["9138172", "9138238"]
console.log(difference(arr, array));
arraybut not inarr?