只将前34岁从年龄上移走,不是所有34岁的人:

ages.splice(ages.indexOf(34), 1);

或者您可以在全球定义一种方法 :

function remove(array, item){
    let ind = array.indexOf(item);
    if(ind !== -1)
        array.splice(ind, 1);
}

将所有34岁的人除去:

ages = ages.filter(a => a !== 34);

我建议删除一个使用删除和过滤的阵列项目:

var arr = [1,2,3,4,5,5,5,6,7,8,9];删除ar[5];rr = arr.filter(职能(项目){返回项目!=未定义;});//结果:[1、2,3,4,5,6,6,7,7,8,9];删除ar[5];ar = arr.filter(职能(项目){返回项目);//结果:[1、2,3,4,6,6,6,7,7,8,9] 控制台。

因此,我们只能删除一个特定的数组项目,而不是所有具有相同价值的项目。

使用 JavaScript 原型特性定义列对象上名为删除() 的方法 。

使用 spolice () 方法满足您的要求 。

请看看下面的代码

Array.prototype.remove = function(item) {
    // 'index' will have -1 if 'item' does not exist,
    // else it will have the index of the first item found in the array
    var index = this.indexOf(item);

    if (index > -1) {
        // The splice() method is used to add/remove items(s) in the array
        this.splice(index, 1);
    }
    return index;
}

var arr = [ 11, 22, 67, 45, 61, 89, 34, 12, 7, 8, 3, -1, -4];

// Printing array
// [ 11, 22, 67, 45, 61, 89, 34, 12, 7, 8, 3, -1, -4];
console.log(arr)

// Removing 67 (getting its index, i.e. 2)
console.log("Removing 67")
var index = arr.remove(67)

if (index > 0){
    console.log("Item 67 found at ", index)
} else {
    console.log("Item 67 does not exist in array")
}

// Printing updated array
// [ 11, 22, 45, 61, 89, 34, 12, 7, 8, 3, -1, -4];
console.log(arr)

// ............... Output ................................
// [ 11, 22, 67, 45, 61, 89, 34, 12, 7, 8, 3, -1, -4 ]
// Removing 67
// Item 67 found at  2
// [ 11, 22, 45, 61, 89, 34, 12, 7, 8, 3, -1, -4 ]

注:以下是Norde.js REPL上执行的完整示例代码,该代码描述推()、流行()、转移()、非轮档()和交点()方法的使用。

> // Defining an array
undefined
> var arr = [12, 45, 67, 89, 34, 12, 7, 8, 3, -1, -4, -11, 0, 56, 12, 34];
undefined
> // Getting length of array
undefined
> arr.length;
16
> // Adding 1 more item at the end i.e. pushing an item
undefined
> arr.push(55);
17
> arr
[ 12, 45, 67, 89, 34, 12, 7, 8, 3, -1, -4, -11, 0, 56, 12, 34, 55 ]
> // Popping item from array (i.e. from end)
undefined
> arr.pop()
55
> arr
[ 12, 45, 67, 89, 34, 12, 7, 8, 3, -1, -4, -11, 0, 56, 12, 34 ]
> // Remove item from beginning
undefined
> arr.shift()
12
> arr
[ 45, 67, 89, 34, 12, 7, 8, 3, -1, -4, -11, 0, 56, 12, 34 ]
> // Add item(s) at beginning
undefined
> arr.unshift(67); // Add 67 at beginning of the array and return number of items in updated/new array
16
> arr
[ 67, 45, 67, 89, 34, 12, 7, 8, 3, -1, -4, -11, 0, 56, 12, 34 ]
> arr.unshift(11, 22); // Adding 2 more items at the beginning of array
18
> arr
[ 11, 22, 67, 45, 67, 89, 34, 12, 7, 8, 3, -1, -4, -11, 0, 56, 12, 34 ]
>
> // Define a method on array (temporarily) to remove an item and return the index of removed item; if it is found else return -1
undefined
> Array.prototype.remove = function(item) {
... var index = this.indexOf(item);
... if (index > -1) {
..... this.splice(index, 1); // splice() method is used to add/remove items in array
..... }
... return index;
... }
[Function]
>
> arr
[ 11, 22, 67, 45, 67, 89, 34, 12, 7, 8, 3, -1, -4, -11, 0, 56, 12, 34 ]
>
> arr.remove(45);    // Remove 45 (you will get the index of removed item)
3
> arr
[ 11, 22, 67, 67, 89, 34, 12, 7, 8, 3, -1, -4, -11, 0, 56, 12, 34 ]
>
> arr.remove(22)    // Remove 22
1
> arr
[ 11, 67, 67, 89, 34, 12, 7, 8, 3, -1, -4, -11, 0, 56, 12, 34 ]
> arr.remove(67)    // Remove 67
1
> arr
[ 11, 67, 89, 34, 12, 7, 8, 3, -1, -4, -11, 0, 56, 12, 34 ]
>
> arr.remove(89)    // Remove 89
2
> arr
[ 11, 67, 34, 12, 7, 8, 3, -1, -4, -11, 0, 56, 12, 34 ]
>
> arr.remove(100);  // 100 doesn't exist, remove() will return -1
-1
>

对于任何想要复制一种方法的人,如果想复制一种方法,返回一个重复删除数字或字符串的新阵列,则从现有答案中归纳如下:

function uniq(array) {
  var len = array.length;
  var dupFree = [];
  var tempObj = {};

  for (var i = 0; i < len; i++) {
    tempObj[array[i]] = 0;
  }

  console.log(tempObj);

  for (var i in tempObj) {
    var element = i;
    if (i.match(/\d/)) {
      element = Number(i);
    }
    dupFree.push(element);
  }

  return dupFree;
}

使用$.inAray, 以其价值删除一个元素:

$(document).ready(function(){
    var arr = ["C#","Ruby","PHP","C","C++"];
    var itemtoRemove = "PHP";
    arr.splice($.inArray(itemtoRemove, arr),1);
});

更现代的ECMAScript 2015(原称和谐或ES6)方法。

const items = [1, 2, 3, 4];
const index = 2;

然后:

items.filter((x, i) => i !== index);

弹出 :

[1, 2, 4]

您可以使用 Babel 和多填充服务,以确保浏览器之间有很好的支持。