delete duplicates array javascript 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: prevent duplicate entries in javascript array
if (array.indexOf(value) === -1) array.push(value);
Example 3: remove duplicates in array
uniq = [...new Set(array)];
or
uniqueArray = a.filter(function(item, pos) {
return a.indexOf(item) == pos;
})
Example 4: array remove duplicates javascript
uniq = [...new Set(array)];