Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
163 views
in Technique[技术] by (71.8m points)

render的参数问题

一直没搞懂render的参数问题。比如


   Vue.component('node1',{
    render:function (a) {
        return a('h1',{
            style:{
            color:'red'
            }},
            [
                '文本内容',a('div','子标签文本内容')
            ],
        )
    }
   })

为什么参数随便填个a也能创造H1和div标签呢,不是应该是render:function(createElement){
return createElement('h1','demo')
}才对吗?


与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Reply

0 votes
by (71.8m points)

就是一个入参...你起啥名不行?


假设有一个函数,它接受一个类型是 Function 的参数:

function func(callback) {
  callback();
}

那你写成:

function func(a) {
  a();
}

有什么不行?


与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
OGeek|极客中国-欢迎来到极客的世界,一个免费开放的程序员编程交流平台!开放,进步,分享!让技术改变生活,让极客改变未来! Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

...