10 examples of 'javascript generate unique id' in JavaScript

6
function createId () {
7
  return (
8
    Math.random().toString(16).substring(2)
9
  + Math.random().toString(16).substring(2)
10
  )
11
}

2
function generateID() {
3
    let str = '';
4
    for (let i = 0; i < 16; i += 1) {
5
        str += chars[Math.floor(Math.random() * chars.length)];
6
    }
7
    return str;
8
}

6
function generateId() {
7
    let text = "";
8
    const possible = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
9
10
    for (let i = 0; i < 60; i++)
11
        text += possible.charAt(Math.floor(Math.random() * possible.length));
12
13
    return text;
14
}

5
function createId() {
6
    return prefix + Date.now();
7
}

47
export function autoId(): string {
48
  const chars =
49
    'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
50
  let autoId = '';
51
  for (let i = 0; i < 20; i++) {
52
    autoId += chars.charAt(Math.floor(Math.random() * chars.length));
53
  }
54
  return autoId;
55
}

22
function generateNewId() {
23
    var objectId = new ObjectId();
24
    document.getElementById("timeStamp").value = objectId.getDate();
25
    document.getElementById("machine").value = objectId.machine;
26
    document.getElementById("pid").value = objectId.pid;
27
    document.getElementById("increment").value = objectId.increment;
28
    if (typeof (JSON) == 'object' && typeof (JSON.stringify) == 'function') {
29
        var txtNode = document.createTextNode('Raw: ');
30
        var element = document.createElement('pre').appendChild(document.createTextNode(JSON.stringify(objectId)));
31
        var rawObject = document.getElementById("rawObject");
32
        while (rawObject.childNodes.length > 0) {
33
            rawObject.removeChild(rawObject.childNodes[0]);
34
        }
35
        rawObject.appendChild(txtNode);
36
        rawObject.appendChild(element);
37
    }
38
}

10
function makeId() {
11
  return '_' + Math.random().toString(36).substr(2, 9);
12
};

43
export function genId() {
44
  return (
45
    Math.random()
46
      .toString(36)
47
      .substring(2, 15) +
48
    Math.random()
49
      .toString(36)
50
      .substring(2, 15)
51
  )
52
}

382
function makeID () {
383
  return 'containerid-' + Math.floor((1 + Math.random()) * 0x10000).toString(16).substring(1)
384
}

83
function generateID(){
84
    // generate random 5 character id for the session
85
    var d = new Date().getTime();
86
    if(window.performance && typeof window.performance.now === "function"){
87
        d += performance.now();
88
    }
89
    var uuid = 'xxxxx'.replace(/[xy]/g, function(c) {
90
        var r = (d + Math.random()*16)%16 | 0;
91
        d = Math.floor(d/16);
92
        return (c=='x' ? r : (r&0x3|0x8)).toString(16);
93
    });
94
    return uuid;
95
}