介绍
扩展运算符能将[数组]转换位逗号分隔的[参数序列]
声明一个数组
const boby =['张倩','李旺','赵茜']
声明一个函数
function chuan(){
console.log(arguments);
}
chuan(...boby)
应用
1.数组的合并
const kuaizi =['王太利','肖央'];
const babb =['焊丝里','花花'];
const klok =kuaizi.concat(fenghuang);
const klok = ['...kuaizi,...babb'];
console.log(klok);
变成数组(
const klok = ['...kuaizi,...babb'];
)
2.数组的克隆
浅拷贝
const szh = ['E','G','M'];
const kel =[...szh];
console.log(kel);
3.将伪数组转化为真数组
const divs = document.querySelectorAll('div')
const divArr = [...divs]
console.log(divArr);