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13 lip 2024 · Learn how to use the concat() method to merge two or more arrays and return a new array. See syntax, parameters, examples, and browser compatibility of this method.
Learn how to use the concat() method to join two or more arrays in JavaScript. See examples, syntax, parameters, return value and browser support.
22 lut 2011 · If you have array of arrays and want to concat the elements into a single array, try the following code (Requires ES2015): let arrOfArr = [[1,2,3,4],[5,6,7,8]]; let newArr = []; for (let arr of arrOfArr) { newArr.push(...arr); } console.log(newArr); //Output: [1,2,3,4,5,6,7,8]; Or if you're into functional programming
28 lis 2022 · Learn three ways to combine arrays in JavaScript using the spread operator, the concat method, and the push method. See examples, explanations, and comparisons of each approach.
In this tutorial, you have learned two ways to merge multiple arrays into a single array by using the JavaScript Array concat() method and spread operator.
If you want to modify the original array instead of returning a new array, use .push()... array1.push.apply(array1, array2); array1.push.apply(array1, array3); I used .apply to push the individual members of arrays 2 and 3 at once.
