我刚刚创建了一个多填充Array.prototype通过Object.defineProperty以删除数组中一个想要的元素,而不会在稍后通过for .. in ..

if (!Array.prototype.remove) {
  // Object.definedProperty is used here to avoid problems when iterating with "for .. in .." in Arrays
  // https://stackoverflow.com/questions/948358/adding-custom-functions-into-array-prototype
  Object.defineProperty(Array.prototype, 'remove', {
    value: function () {
      if (this == null) {
        throw new TypeError('Array.prototype.remove called on null or undefined')
      }

      for (var i = 0; i < arguments.length; i++) {
        if (typeof arguments[i] === 'object') {
          if (Object.keys(arguments[i]).length > 1) {
            throw new Error('This method does not support more than one key:value pair per object on the arguments')
          }
          var keyToCompare = Object.keys(arguments[i])[0]

          for (var j = 0; j < this.length; j++) {
            if (this[j][keyToCompare] === arguments[i][keyToCompare]) {
              this.splice(j, 1)
              break
            }
          }
        } else {
          var index = this.indexOf(arguments[i])
          if (index !== -1) {
            this.splice(index, 1)
          }
        }
      }
      return this
    }
  })
} else {
  var errorMessage = 'DANGER ALERT! Array.prototype.remove has already been defined on this browser. '
  errorMessage += 'This may lead to unwanted results when remove() is executed.'
  console.log(errorMessage)
}

删除整数值

var a = [1, 2, 3]
a.remove(2)
a // Output => [1, 3]

删除字符串值

var a = ['a', 'ab', 'abc']
a.remove('abc')
a // Output => ['a', 'ab']

删除布尔值

var a = [true, false, true]
a.remove(false)
a // Output => [true, true]

也可以通过此方法从数组中移除对象Array.prototype.remove方法。只需指定key => value of the Object您想要删除。

删除对象值

var a = [{a: 1, b: 2}, {a: 2, b: 2}, {a: 3, b: 2}]
a.remove({a: 1})
a // Output => [{a: 2, b: 2}, {a: 3, b: 2}]

我设定了一个函数:

function pop(valuetoremove, myarray) {
    var indexofmyvalue = myarray.indexOf(valuetoremove);
    myarray.splice(indexofmyvalue, 1);
}

并用它这样:

pop(valuetoremove, myarray);

您可以使用Set,然后使用delete函数 :

const s = Set;
s.add('hello');
s.add('goodbye');
s.delete('hello');

您可以扩展数组对象以定义自定义的删除函数如下:

let numbers = [1,2,4,4,5,3,45,9];

numbers.delete = function(value){
    var indexOfTarget = this.indexOf(value)

    if(indexOfTarget !== -1)
    {
        console.log("array before delete " + this)
        this.splice(indexOfTarget, 1)
        console.log("array after delete " + this)
    }
    else{
        console.error("element " + value + " not found")
    }
}
numbers.delete(888)
// Expected output:
// element 888 not found
numbers.delete(1)

// Expected output;
// array before delete 1,2,4,4,5,3,45,9
// array after delete 2,4,4,5,3,45,9

使用过滤过滤器这是达到这一要求的优雅方式。filter将不改变原始数组。

const num = 3;
let arr = [1, 2, 3, 4];
const arr2 = arr.filter(x => x !== num);
console.log(arr); // [1, 2, 3, 4]
console.log(arr2); // [1, 2, 4]

您可以使用filter然后将结果指定为原始数组,如果你想实现突变清除行为的话。

const num = 3;
let arr = [1, 2, 3, 4];
arr = arr.filter(x => x !== num);
console.log(arr); // [1, 2, 4]

顺便说一句,filter将删除在条件中匹配的所有事件( 不只是第一次发生) , 正如您在下面的示例中看到的一样

const num = 3;
let arr = [1, 2, 3, 3, 3, 4];
arr = arr.filter(x => x !== num);
console.log(arr); // [1, 2, 4]

万一您只想删除第一种情况,您可以使用复盘方法

const num = 3;
let arr = [1, 2, 3, 3, 3, 4];
const idx = arr.indexOf(num);
arr.splice(idx, idx !== -1 ? 1 : 0);
console.log(arr); // [1, 2, 3, 3, 4]

你可以轻而易举地用过滤过滤器方法 :

function remove(arrOriginal, elementToRemove){
    return arrOriginal.filter(function(el){return el !== elementToRemove});
}
console.log(remove([1, 2, 1, 0, 3, 1, 4], 1));

这将清除数组中的所有元素, 并且运行速度比slice和indexOf.