js find array return true false
['one', 'two'].some(item => item === 'one') // true
['one', 'two'].some(item => item === 'three') // falsejs find array return true false
['one', 'two'].some(item => item === 'one') // true
['one', 'two'].some(item => item === 'three') // falsejs returns the number of true values there are in an array
//returns the number of true values there are in an array
function countTrue(arr) {
return arr.filter(w => w === true).length;
}
console.log(countTrue([true, false, false, true, false]));// 2
console.log(countTrue([false, false, false, false]));// 0
console.log(countTrue([]));// 0Copyright © 2021 Codeinu
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