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JavaScript - multiply each item of array by scalar?
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How can I multiply each item of an array by a scalar in JavaScript?
I need something like:
var array = [1, 2, 3] * 10;
To get array consisting of:
[10, 20, 30]
1 answer
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You can use map() method to do this.
Practical examples
ES6+ solution:
// ONLINE-RUNNER:browser;
const array = [1, 2, 3];
const result = array.map((x) => x * 10);
console.log(result); // [ 10, 20, 30 ]
For older versions of JavaScript:
// ONLINE-RUNNER:browser;
var array = [1, 2, 3];
var result = array.map(function (x) {
return x * 10;
});
console.log(result); // [ 10, 20, 30 ]
References
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