remove duplicate from js array code example
Example 1: javascript remove duplicate in arrays
function removeDuplicates(array) {
return array.filter((a, b) => array.indexOf(a) === b)
};
function removeDuplicates(array) {
let x = {};
array.forEach(function(i) {
if(!x[i]) {
x[i] = true
}
})
return Object.keys(x)
};
function removeDuplicates(array) {
array.splice(0, array.length, ...(new Set(array)))
};
function removeDuplicates(array) {
let a = []
array.map(x =>
if(!a.includes(x) {
a.push(x)
})
return a
};
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Example 2: javascript remove duplicates from 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);