您可以使用

Array.splice(index);

删除上次的元素

arrName.pop();

删除第一个元素

arrName.shift();

从中间删除

arrName.splice(starting index, number of element you wnt to delete);

Example: arrName.splice(1, 1);

删除最后一个元素

arrName.splice(-1);

使用数组索引编号删除

 delete arrName[1];

最干净的:

var arr = ['1','2','3']; arr = arr.filter (e'e? e?=======================================================================================================================================================3'3'); 控制台.warn(arr);

这也将删除重复(如果有的话)。

您可以扩展数组对象以定义自定义的删除函数如下:

let let = [1, 2,4,4,4,5,5,45,9;] 数.delete = 函数(价值) { var indexof Target = this.indexof (value) =.indexof(value) = this.if(indexoftaget = = = = = = = = = = y= = y,4,4,4,5,4,459; 数. 数.delet = 函数(val = val indexof Talget = this. indexeof(valent) = = = = = indexget =.indexof = = =. { = indexexuf(val =) { = = indexete = = / / / imme eleteletelete (1) // / / / / 预期输出= / / / tradestrayf delett 删除 2,4,4,4,4,4,4,5,5,5,4,4,5,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,9/ /

此函数从特定位置的数组中删除元素。

数组. remove( 位置) ;

Array. prototype. remove = 函数 (pos) {此. splice(pos, 1);} var arr = ["a", "b", "c", "d", "e"]; arr. remove(2); // 移除"c" 控制台.log(ar);

如果您不知道要删除的项目的位置, 请使用这个 :

array.erase(element);

Array. prototype. erase = 函数( el) { let p = this. indexof (el); // indexof use prettical equality () { this. spliice (p, 1);}} var ar ar = ["a", "b", "c", "d", "e"; arr.erase (c"); 控制台. log (a) ;

除了所有这些解决方案之外, 它也可以用阵列来完成. 减量...

const removeItem = 
    idx => 
    arr => 
    arr.reduce((acc, a, i) =>  idx === i ? acc : acc.concat(a), [])

const array = [1, 2, 3]
const index = 1

const newArray = removeItem(index)(array) 

console.log(newArray) // logs the following array to the console : [1, 3]

...或者一个循环函数(诚实地说不是那么优雅...也许有人有更好的循环解决方案? ? )...

const removeItemPrep = 
    acc => 
    i => 
    idx => 
    arr => 

    // If the index equals i, just feed in the unchanged accumulator(acc) else...
    i === idx ? removeItemPrep(acc)(i + 1)(idx)(arr) :

    // If the array length + 1 of the accumulator is smaller than the array length of the original array concatenate the array element at index i else... 
    acc.length + 1 < arr.length ? removeItemPrep(acc.concat(arr[i]))(i + 1)(idx)(arr) : 

    // return the accumulator
    acc 

const removeItem = removeItemPrep([])(0)

const array = [1, 2, 3]
const index = 1

const newArray = removeItem(index)(array) 

console.log(newArray) // logs the following array to the console : [1, 3]