10 examples of 'javascript check if value exists in array of objects' in JavaScript

177
function isValueInArrayOfObjects(selected, key, value) {
178
    if (!Array.isArray(selected)) {
179
        return selected[key] === value;
180
    }
181
    for (var _i = 0, selected_1 = selected; _i < selected_1.length; _i++) {
182
        var s = selected_1[_i];
183
        if (s && s[key] && s[key] === value) {
184
            return true;
185
        }
186
    }
187
    return false;
188
}

81
function valueExists(value: any) {
82
    return value != null;
83
}

12
function isInArray(value) {
13
  return value !== undefined;
14
}

30
function isInArray(value, array) {
31
  return array.indexOf(value) > -1;
32
}//isInArray

224
function contains(array, value) {
225
    for (var i = array.length; i--;)
226
        if (array[i] == value) return true;
227
    return false;
228
}

11
function contains(array, value) {
12
	for(var i = array.length-1; i >= 0; i--) {
13
		if(array[i] === value) {
14
			return true;
15
		}
16
	}
17
18
	return false;
19
}

233
function contains(array, value) {
234
    for (var i = array.length; i--;)
235
        if (array[i].toString() === value)
236
            return true;
237
    return false;
238
}

75
function ՐՏ_in(val, arr) {
76
    if (Array.isArray(arr) || typeof arr === "string") {
77
        return arr.indexOf(val) !== -1;
78
    } else {
79
        if (arr.hasOwnProperty(val)) {
80
            return true;
81
        }
82
        return false;
83
    }
84
}

113
export function isJsonObject(value: JsonValue): value is JsonObject {
114
  return value != null && typeof value === 'object' && !Array.isArray(value);
115
}

19
function objectKeyExist(object)
20
{
21
    return _.some(object, function (o) {
22
        return !_.isEmpty(_.pick(o, ['customer', 'cart']));
23
    })
24
}