JavaScript 简单的实现 sleep功能 .

 function start(){
     // console.log("Request handle 'start' was called.");
 
     function sleep(milliSeconds){
         var startTime = new Date().getTime();
         while(new Date().getTime() < startTime + milliSeconds);
     }
 
     sleep(10000);
     console.log("Request handle 'start' was called.");
     return "Hello Start.";
 }
 
 function upload(){
     console.log("Request handle 'upload' was called.");
     return "Hello upload.";
 }
 
 exports.start = start;
 exports.upload = upload;

中的:

     function sleep(milliSeconds){
         var startTime = new Date().getTime();
         while(new Date().getTime() < startTime + milliSeconds);
     }
 
     sleep(10000);

参考链接--代码来自:

　　　　node.js 入门: