如果您想要[...].remove( el)- 类似语法,与其他编程语言一样, 然后你可以添加这个代码 :

// Add remove method to Array prototype
Array.prototype.remove = function(value, count=this.length) {
    while(count > 0 && this.includes(value)) {
        this.splice(this.indexOf(value), 1);
        count--;
    }
    return this;
}

用法

// Original array
const arr = [1,2,2,3,2,5,6,7];

// Remove all 2s from array
arr.remove(2); // [1,3,5,6,7]

// Remove one 2 from beginning of array
arr.remove(2, 1); // [1,2,3,2,5,6,7]

// Remove two 2s from beginning of array
arr.remove(2, 2); // [1,3,2,5,6,7]

您可以根据您的需求操控该方法 。

不可改变和一班制方式:

const newArr = targetArr.filter(e => e !== elementToDelete);

Vanilla JavaScript(ES5.1) - (ES5.1) -已经到位版本版本

浏览器支持 :因特网探索者 9或以后(或以后(详细浏览器支持)

/**
 * Removes all occurences of the item from the array.
 *
 * Modifies the array “in place”, i.e. the array passed as an argument
 * is modified as opposed to creating a new array. Also returns the modified
 * array for your convenience.
 */
function removeInPlace(array, item) {
    var foundIndex, fromIndex;

    // Look for the item (the item can have multiple indices)
    fromIndex = array.length - 1;
    foundIndex = array.lastIndexOf(item, fromIndex);

    while (foundIndex !== -1) {
        // Remove the item (in place)
        array.splice(foundIndex, 1);

        // Bookkeeping
        fromIndex = foundIndex - 1;
        foundIndex = array.lastIndexOf(item, fromIndex);
    }

    // Return the modified array
    return array;
}

Vanilla JavaScript(ES5.1) - (ES5.1) -不可变版本版本

浏览器支持: 与原版的香草 JavaScript 相同

/**
 * Removes all occurences of the item from the array.
 *
 * Returns a new array with all the items of the original array except
 * the specified item.
 */
function remove(array, item) {
    var arrayCopy;

    arrayCopy = array.slice();

    return removeInPlace(arrayCopy, item);
}

香草ES6 -不可变版本版本

浏览器支持: Chrome 46, 边缘 12, Firefox 16, Opera 37, Safari 8 ()详细浏览器支持)

/**
 * Removes all occurences of the item from the array.
 *
 * Returns a new array with all the items of the original array except
 * the specified item.
 */
function remove(array, item) {
    // Copy the array
    array = [...array];

    // Look for the item (the item can have multiple indices)
    let fromIndex = array.length - 1;
    let foundIndex = array.lastIndexOf(item, fromIndex);

    while (foundIndex !== -1) {
        // Remove the item by generating a new array without it
        array = [
            ...array.slice(0, foundIndex),
            ...array.slice(foundIndex + 1),
        ];

        // Bookkeeping
        fromIndex = foundIndex - 1;
        foundIndex = array.lastIndexOf(item, fromIndex)
    }

    // Return the new array
    return array;
}

以下方法将从数组中删除给定值的所有条目,而不创建新数组,且只有一个迭代,即超快它在古代因特网探索者 5.5浏览器 :

function removeFromArray(arr, removeValue) {
  for (var i = 0, k = 0, len = arr.length >>> 0; i < len; i++) {
    if (k > 0)
      arr[i - k] = arr[i];

    if (arr[i] === removeValue)
      k++;
  }

  for (; k--;)
    arr.pop();
}

var a = [0, 1, 0, 2, 0, 3];

document.getElementById('code').innerHTML =
  'Initial array [' + a.join(', ') + ']';
//Initial array [0, 1, 0, 2, 0, 3]

removeFromArray(a, 0);

document.getElementById('code').innerHTML +=
  '<br>Resulting array [' + a.join(', ') + ']';
//Resulting array [1, 2, 3]

<code id="code"></code>

var array = [2, 5, 9];
var res = array.splice(array.findIndex(x => x==5), 1);

console.log(res)

使用 Array. findindindex, 我们可以减少代码行数。

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