js ES9对象展开
2021/9/26 23:40:52
本文主要是介绍js ES9对象展开,对大家解决编程问题具有一定的参考价值,需要的程序猿们随着小编来一起学习吧!
rest参数与spread扩展运算符已经在ES6中引入,但是ES6没有提供对象的实现 ES9中为对象提供了像数组一样的rest参数和扩展运算符function connect({host, port, ...user}){ console.log(host);//127.0.0.1 console.log(port);//3306 console.log(user);//Object password: "root" type: "master" username: "root" } connect({ host:'127.0.0.1', port:3306, username:'root', password:'root', type:'master' }) // 扩展运算符 const skillOne = { c: '暗影冲刺' } const skillTwo = { h: '威吓' } const skillThree = { t: '巨力重击' } const skillFour = { e: '幽冥一击' } const spiritBreaker = {...skillOne,...skillTwo,...skillThree,...skillFour}; console.log(spiritBreaker);//{c: '暗影冲刺', h: '威吓', t: '巨力重击', e: '幽冥一击'}
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