【已解决】React 调用函数竟然不对，提示这个函数undefined

Question

goToDetail(){
console.log("看看能出来吗？")
}
renderComment({name,author,uploadTime,description,category,sraID}){
switch(category){
case"0":return"other";
case"1":return"project";
case"2":return"paper";
case"3":return"book";
case"4":return"certificate";
case"5":return"patent";
case"6":return"picture";
}
return(
{name}
{author}
-
{uploadTime}
描述：{description}
);
}
render(){
if(this.state.contents){
return(
{this.state.contents.map(this.renderComment)}

Answer 1

手动绑定下thisconstructor(){super();this.renderComment=this.renderComment.bind(this);}用箭头函数renderComment=()=>{}