10 examples of 'javascript isdefined' in JavaScript

1
export function isDefined(value) {
2
  if (value !== undefined && value !== null && value !== '') {
3
    return true;
4
  } else {
5
    return false;
6
  }
7
}

74
function isDefined(value) {
75
  return value !== null && value !== undefined && !(value instanceof Nothing);
76
}

155
function isDefined(value) {
156
  return value !== undefined && value !== null;
157
}

9
export function isDefined(value: T | undefined | null): value is T {
10
  return typeof value !== 'undefined' && value !== null;
11
}

16
export function isDefined(value: T | undefined | null): value is T {
17
  return (value !== undefined) && (value !== null);
18
}

22
export function isDefined(value){
23
  return typeof value !== 'undefined';
24
}

6
function isDefined (variable) {
7
  return !(variable === undefined || variable === '' || variable === null)
8
}

374
function _isDefined(obj, key) {
375
    return obj != null && typeof obj === 'object' && key in obj;
376
}

322
function isDefined(input) {
323
    return typeof input !== "undefined";
324
}

106
function isDefined (input) {
107
  return typeof input !== 'undefined'
108
}