10 examples of 'js foreach key value' in JavaScript

29
(function TestForEachNoValue() {
30
  res = "c) ";
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  var myMap = new Map([['key1', ''], ['key2',], ['key3', undefined], ['key4', null]]);
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  myMap.forEach(logElement);
33
34
  assertEquals("c) map[key1] = '' map[key2] = 'undefined' map[key3] = 'undefined' map[key4] = 'null' ", res);
35
})();

133
forEach(callbackfn: (value: V, index: K, map: this) => void, thisArg?: any): void {
134
	for (const property of Object.keys(this._keys)) {
135
		callbackfn.call(thisArg, this._values[property], this._keys[property], this);
136
	}
137
}

25
function forEach(value, fn, path) {
26
    path = path || '';
27
28
    if (Array.isArray(value)) {
29
        forEachArray(value, fn, path);
30
    } else if (isPlainObject(value)) {
31
        forEachObject(value, fn, path);
32
    }
33
}

1026
export function foreach(obj: { [key: string]: V }, action: (key: string, value: V) => void) {
1027
1028
  for (const name in obj) {
1029
    if (obj.hasOwnProperty == null || obj.hasOwnProperty(name)) {
1030
      action(name, obj[name]);
1031
    }
1032
  }
1033
}

4
export function forEach(obj, callback) {
5
  if (obj) {
6
    Object.keys(obj).forEach((key) => {
7
      // eslint-disable-line no-restricted-syntax
8
      if ({}.hasOwnProperty.call(obj, key)) {
9
        callback(key, obj[key]);
10
      }
11
    });
12
  }
13
}

276
export function objectForEach(
277
  obj: { [key: string]: V },
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  cb: (value: V, key: string) => void
279
): void {
280
  Object.keys(obj).forEach(key => cb(obj[key], key));
281
}

28
function forEach(obj, fn) {
29
  Object.keys(obj).forEach(function(name, index) {
30
    fn(obj[name], name, index);
31
  });
32
}

10
module.exports = function forEach(obj, fn) {
11
	if (!isFunction(fn)) {
12
		throw new TypeError('iterator must be a function');
13
	}
14
	var i, k,
15
		isString = typeof obj === 'string',
16
		l = obj.length,
17
		context = arguments.length > 2 ? arguments[2] : null;
18
	if (l === +l) {
19
		for (i = 0; i < l; i++) {
20
			if (context === null) {
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				fn(isString ? obj.charAt(i) : obj[i], i, obj);
22
			} else {
23
				fn.call(context, isString ? obj.charAt(i) : obj[i], i, obj);
24
			}
25
		}
26
	} else {
27
		for (k in obj) {
28
			if (hasOwn.call(obj, k)) {
29
				if (context === null) {
30
					fn(obj[k], k, obj);
31
				} else {
32
					fn.call(context, obj[k], k, obj);
33
				}
34
			}
35
		}
36
	}
37
};

3
function forEach(list, iterator, context) {
4
    var keys = Object.keys(list)
5
6
    if (arguments.length < 3) {
7
        context = this
8
    }
9
10
    for (var i = 0, len = keys.length; i < len; i++) {
11
        var key = keys[i]
12
            , value = list[key]
13
        
14
        iterator.call(context, value, key, list)
15
    }
16
}

34
public forEach( cb : ( element : V, key : string, map : ObjectMap ) => any, thisArg : any ) {
35
    for( var i in this._map ) {
36
        if( this._map.hasOwnProperty( i ) ) {
37
            cb.call( thisArg, this._map[i], i, this );
38
        }
39
    }
40
}