<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title></title> </head> <body> 本代码不能运行 </body> </html> <script> //1111111111111111111111111111111111111 [3, 3, 3].forEach(function (a, b, c, d) { //3 0 [ 3, 3, 3, 3, 3 ] undefined console.log(a, b, c, d) }) //2222222222222222222222222222222222222 $.each([3, 3, 3, 3], function (a, b, c) { console.log(a, b, c) //0 3 undefined }) $.each({ a: 'b' }, function (a, b) { console.log(a, b) //a,b }); //3333333333333333333333333333333333333 angular.forEach([3, 3, 3], function (a, b, c, d) { console.log(a, b, c, d) //3 0 Array(6) undefined }); angular.forEach({ a: 'b' }, function (a, b) { console.log(a, b) //b,a }); </script> <!-- <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>angular</title> <script src="https://cdn.bootcss.com/jquery/1.9.1/jquery.js"></script> </head> <body> </body> </html> <script> </script> --></html> <!-- <!DOCTYPE html> <html lang="en" ng-app="myModel"> <head> <meta charset="UTF-8"> <title>select</title> <script src="https://cdn.bootcss.com/echarts/3.7.1/echarts.js"></script> <script src="https://cdn.bootcss.com/jquery/1.9.1/jquery.js"></script> <script src="https://cdn.bootcss.com/angular.js/1.6.2/angular.js"></script> </head> <body> <div ng-controller="firstCtrl"> <div style="width:100%;display:flex;"> <div style="width:50%;display:flex;flex-direction:column;" id="left"> </div> <div style="width:50%;display:flex;flex-direction:column;" id="right"> </div> </div> </div> </body> </html> <script> var app = angular.module('myModel', []); app.controller('firstCtrl', function ($scope) { }); </script> -->