javascript get same elments from multiple arrays
var result = arrays.shift().filter(function(v) {
return arrays.every(function(a) {
return a.indexOf(v) !== -1;
});
});javascript get same elments from multiple arrays
var result = arrays.shift().filter(function(v) {
return arrays.every(function(a) {
return a.indexOf(v) !== -1;
});
});javascript get unique elements in array
function toUniqueArray(a){
var newArr = [];
for (var i = 0; i < a.length; i++) {
if (newArr.indexOf(a[i]) === -1) {
newArr.push(a[i]);
}
}
return newArr;
}
var colors = ["red","red","green","green","green"];
var colorsUnique=toUniqueArray(colors); // ["red","green"]javascript find matching elements in two arrays
let firstArray = ["One", "Two", "Three", "Four", "Five"];
let secondArray = ["Three", "Four"];
let map = {};
firstArray.forEach(i => map[i] = false);
secondArray.forEach(i => map[i] === false && (map[i] = true));
let jsonArray = Object.keys(map).map(k => ({ name: k, matched: map[k] }));Copyright © 2021 Codeinu
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