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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?


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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?


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