<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>队列</title> </head> <body> <script> function Queue(){ this.items=[] Queue.prototype.push=function(element){ this.items.push(element) } Queue.prototype.shift=function(){ return this.items.shift() } Queue.prototype.front=function(){ return this.items[0] } Queue.prototype.isEmpty=function(){ return this.items.length==0 } Queue.prototype.size=function(){ return this.items.length } Queue.prototype.toString=function(){ var resultString="" for(var i=0;i<this.items.length;i++){ resultString+=this.items[i]+"" } return resultString } } </script> </body> </html>
