10 examples of 'js array remove element by index' in JavaScript

30
public removeAt(index: number): this {
31
    const argumentName = this._getNextArgumentName();
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    this._scriptLines.push("this." + this._pathToArray + ".splice(args." + argumentName + ", 1);");
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    this._parameters[argumentName] = index;
35
    return this;
36
}

48
export function remove(array, index) {
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  var len = array.length - 1;
50
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  var out = new Array(len);
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  var i = 0;
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  while (i < index) {
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    out[i] = array[i];
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    ++i;
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  }
58
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  while (i < len) {
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    out[i] = array[i + 1];
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    ++i;
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  }
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  return out;
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}

11
static remove(array, index, callback) {
12
  array.splice(index, 1);
13
  if (callback) {
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    callback();
15
  }
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}

86
public static remove(array: T[], element: any | ((element: T) => boolean), options: { firstOnly: boolean }): T[] {
87
  // define a function to resolve the element's index in the original array
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  const indexOfElementFn = ((): () => number => {
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    if (typeof element === 'function') {
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      return (): number => array.findIndex(element);
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    }
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    else {
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      return (): number => array.indexOf(element);
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    }
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  })();
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  const removedElements = [];
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  for (let i = indexOfElementFn(); i !== -1; i = indexOfElementFn()) {
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    removedElements.push(...array.splice(i, 1)); // changes the original array
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    if (options.firstOnly) {
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      break;
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    }
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  }
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  return removedElements;
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}

98
export function remove__index(array, index) {
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	return array.splice(index, 1)
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}

13
function arrayRemove (array, el) {
14
  let index = array.indexOf(el)
15
  if (index > -1) {
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    array.splice(index, 1)
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  }
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  return index
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}

279
removeElementAtIndex(index: number): T | undefined {
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    if (index < 0 || index >= this.nElements || this.firstNode === null || this.lastNode === null) {
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        return undefined;
282
    }
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    let element: T | undefined;
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    if (this.nElements === 1) {
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        //First node in the list.
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        element = this.firstNode.element;
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        this.firstNode = null;
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        this.lastNode = null;
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    } else {
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        const previous = this.nodeAtIndex(index - 1);
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        if (previous === null) {
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            element = this.firstNode.element;
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            this.firstNode = this.firstNode.next;
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        } else if (previous.next === this.lastNode) {
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            element = this.lastNode.element;
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            this.lastNode = previous;
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        }
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        if (previous !== null && previous.next !== null) {
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            element = previous.next.element;
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            previous.next = previous.next.next;
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        }
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    }
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    this.nElements--;
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    return element;
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}

11
at (index, value) {
12
  if (value !== undefined) {
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    if (this._array[index] !== undefined) {
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      this._removeValue(this._array[index])
15
    }
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    this._addValue(this._array[index] = value)
18
  }
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  return this._array[index]
21
}

54
function remove_element(array, elem) {
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    var index = array.indexOf(elem);
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    if (index > -1) {
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        array.splice(index, 1);
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    }
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}

171
function remove(array, el) {
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    var i;
173
    for (i = array.length - 1; i > -1; i-=1) {
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        if (array[i] === el) {
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            array.splice(i, 1);
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        }
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    }
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}