3 examples of 'javascript array push key value' in JavaScript

62
var pushOrCreateArrayAt = function pushOrCreateArrayAt(object, key, valueToPush) {
63
	// don't need to use hasOwnProp as there is no array in the prototype
64
	// but still use it to avoid a warning
65
	// const potentialArray = object[key]
66
	if (Object.prototype.hasOwnProperty.call(object, key)) {
67
		// eventually the if is always true
68
		object[key].push(valueToPush);
69
	} else {
70
		// only for the first time
71
		object[key] = [valueToPush];
72
	}
73
};

95
var pushOrCreateArrayAt = function pushOrCreateArrayAt(object, key, valueToPush) {
96
    // don't need to use hasOwnProp as there is no array in the prototype
97
    // but still use it to avoid a warning
98
    // const potentialArray = object[key]
99
    if (hasOwnProperty.call(object, key)) {
100
        // eventually the if is always true
101
        object[key].push(valueToPush);
102
    } else {
103
        // only for the first time
104
        object[key] = [valueToPush];
105
    }
106
};

3
function setValue(obj, keys, lastKeyIndex, keyIndex, value){
4
  const key = keys[keyIndex];
5
  if(lastKeyIndex === keyIndex ){
6
    obj[key] = value;
7
  }else{
8
    setValue(obj[key], keys, lastKeyIndex, ++keyIndex, value)
9
  }
10
}