5 examples of 'update object in array javascript' in JavaScript

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70function updateArray(array) {
71 var changeListener = collectionListener(array);
72 var listener = observe(array, changeListener);
73 array.silentSplice = function () {
74 listener();
75 var res;
76 runInAction(() => { res = array.splice.apply(array, arguments) });
77 listener = observe(array, changeListener);
78 return res;
79 };
80}
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44_addArrayItem() {
45 const newId = Math.round(Math.random() * 100);
46 const newItem = { id: newId };
47 this.myArray = [
48 ...this.myArray,
49 newItem,
50 ];
51
52 /**
53 * An alternative method is to mutate the array and then call
54 * requestUpdate() to notify LitElement the property changed.
55 */
56 // this.myArray.push(newItem);
57 // this.requestUpdate();
58}
18updateArray (key, value) {
19 const array = this.props[formDataProp][key]
20 const index = array.indexOf(value)
21
22 if (array.indexOf(value) > -1) {
23 array.splice(index, 1)
24 } else {
25 array.push(value)
26 }
27}
9function insertIntoArray<T>(array: T[], object: T): T[] {
10 return array ? [object, ...array] : [object];
11}
7function updateArrayEntry<T>(
8 array: Array<T>,
9 scope: number | string,
10 newVal: any
11): Array<T> {
12 if (newVal === array[scope]) {
13 return array;
14 }
15 const index = parseInt(scope as string);
16 if (typeof newVal === 'undefined') {
17 return array.filter((_val, i) => i !== index);
18 }
19 return array.map((val, i) => (i === index ? newVal : val));
20}

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