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

70
function updateArray(array) {
71
    var changeListener = collectionListener(array);
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    var listener = observe(array, changeListener);
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    array.silentSplice = function () {
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        listener();
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        var res;
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        runInAction(() => { res = array.splice.apply(array, arguments) });
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        listener = observe(array, changeListener);
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        return res;
79
    };
80
}

44
_addArrayItem() {
45
  const newId = Math.round(Math.random() * 100);
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  const newItem = { id: newId };
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  this.myArray = [
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    ...this.myArray, 
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    newItem,
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  ];
51
52
  /**
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   * An alternative method is to mutate the array and then call
54
   * requestUpdate() to notify LitElement the property changed.
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   */
56
  // this.myArray.push(newItem);
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  // this.requestUpdate();
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}

18
updateArray (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 {
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    array.push(value)
26
  }
27
}

9
function insertIntoArray(array: T[], object: T): T[] {
10
  return array ? [object, ...array] : [object];
11
}

7
function updateArrayEntry(
8
  array: Array,
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  scope: number | string,
10
  newVal: any
11
): Array {
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
}