数组的join方法
Array.prototype.MyJoin = function (s = ',') {
let str = ''
for(let i = 0; i < this.length; i++) {
str = i === 0 ? `${str}${this[i]}` : `${str}${s}${this[i]}`
}
return str
}
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数组的join方法Array.prototype.MyJoin = function (s = ',') {
let str = ''
for(let i = 0; i < this.length; i++) {
str = i === 0 ? `${str}${this[i]}` : `${str}${s}${this[i]}`
}
return str
}