remove duplicate array js code example
Example 1: js delete duplicates from array
const names = ['John', 'Paul', 'George', 'Ringo', 'John'];
let unique = [...new Set(names)];
console.log(unique);
Example 2: 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
};
/THIS SITE/ "https://dev.to/mshin1995/back-to-basics-removing-duplicates-from-an-array-55he#comments"
Example 3: javascript dedupe array
const names = ['John', 'Paul', 'George', 'Ringo', 'John'];
let x = (names) => names.filter((v,i) => names.indexOf(v) === i)
x(names);
Example 4: javascript remove duplicates from array
unique = [...new Set(arr)];
Example 5: how to remove duplicates in array in javascript
const numbers = [1 , 21, 21, 34 ,12 ,34 ,12];
const removeRepeatNumbers = array => [... new Set(array)]
removeRepeatNumbers(numbers)
Example 6: how to remove duplicate values in array javascript
var car = ["Saab","Volvo","BMW","Saab","BMW",];
var cars = [...new Set(car)]
document.getElementById("demo").innerHTML = cars;