Example 1: random id js
var ID = function () {
return '_' + Math.random().toString(36).substr(2, 9);
};
Example 2: javascript find unique values in array
var myArray = ['a', 1, 'a', 2, '1'];
var unique = myArray.filter((v, i, a) => a.indexOf(v) === i);
Example 3: javascript generate unique id
function uuidv4() {
return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function(c) {
var r = Math.random() * 16 | 0, v = c == 'x' ? r : (r & 0x3 | 0x8);
return v.toString(16);
});
}
console.log(uuidv4());
Example 4: javascript generate unique id
function randomId(): string {
const uint32 = window.crypto.getRandomValues(new Uint32Array(1))[0];
return uint32.toString(16);
}
Example 5: javascript get unique values from key
const unique = [...new Set(array.map(item => item.age))];
Example 6: javascript uniqie id
function uuid() {
return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function(c) {
var r = Math.random() * 16 | 0, v = c == 'x' ? r : (r & 0x3 | 0x8);
return v.toString(16);
});
}
var userID=uuid();
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