手写use方法
作者:
嵩鼠 | 来源:发表于
2020-10-16 16:35 被阅读0次function express(){
var funcs = [];
var expr = function(req,res){
var i = 0;
function next(){
var task = funcs[i++];
if(!task) return;
task(req,res,next);
}
next();
}
expr.use=function(f){
funcs.push(f);
}
return expr;
}
var app = express();
app.use(function(req,res,next){
console.log('haha');
next();
});
app.use(function(req,res,next){
console.log('hehe');
next();
});
app.use(function(req,res){
res.end("there is nothing happened");
});
引用于:https://blog.csdn.net/u014723529/article/details/42581933?utm_medium=distribute.wap_relevant.none-task-blog-BlogCommendFromMachineLearnPai2-4.wap_blog_relevant_pic&depth_1-utm_source=distribute.wap_relevant.none-task-blog-BlogCommendFromMachineLearnPai2-4.wap_blog_relevant_pic
本文标题：手写use方法
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