let key = 'skill'
var obj = {
[key]: 'web'
}
console.log(obj)
执行结果
...
yekong
3年前 (2021-09-07)
喜欢
for of
let arr = ['ceshi', 'wanjun', 'wanjunshijie']
for (let val of arr) {
console.log(val)
}
map
let arr = [&...
yekong
3年前 (2021-09-07)
喜欢
let arr = ['wanjunshijie', 'wanjunshijie1', 'wanjunshijie2']
arr.map((val, index) => {
console.log(index, val...
yekong
3年前 (2021-09-07)
喜欢
let arr = ['wanjunshijie', 'wanjunshijie1', 'wanjunshijie2']
console.log(arr.map(x => 'web'))
运行结果
['...
yekong
3年前 (2021-09-07)
喜欢
some
let arr = ['wanjunshijie', 'wanjunshijie1', 'wanjunshijie2']
arr.some((val, index) => {
console.log(inde...
yekong
3年前 (2021-09-07)
喜欢
let arr = ['wanjunshijie', 'wanjunshijie1', 'wanjunshijie2']
arr.filter((val, index) => {
console.log(index, ...
yekong
3年前 (2021-09-07)
喜欢
let arr = ['wanjunshijie', 'wanjunshijie1', 'wanjunshijie2']
arr.forEach((val, index) => {
console.log(index,...
yekong
3年前 (2021-09-07)
喜欢
判断数组里面的值是否是空位
let arr = ['wanjunshijie', , , ,]
console.log(0 in arr)
console.log(1 in arr)
结果
true
false
...
yekong
3年前 (2021-09-07)
喜欢
使用in来判断对象中是否包含某个值
let obj = {
a: 'ceshi',
b: 'wanjunshijie'
}
console.log('a' in obj)
console.log('x'...
yekong
3年前 (2021-09-06)
喜欢
let arr = ['ceshi', 'wanjun', 'wanjunshijie']
function fun(a, b, c) {
console.log(a, b, c)
}
fun(...arr)
执行结果...
yekong
3年前 (2021-09-06)
喜欢
