<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>Insert title here</title> <script type="text/javascript" src="jquery-1.9.0.min.js"></script> <script type="text/javascript"> //遍历对象 var param = { apple : 'zs', bana : { x : 'ls', y : 'w2' } } for(var i in param){ // console.log(i,":",param[i]); } Object.keys(param).forEach(function(key){ //console.log(key,param[key]); }); Object.keys(param).forEach(function(val,index){ //console.log(index,val); }); $.each(param,function(i,n){ // console.log(i,n); }); //遍历数组 var arr = [1,2,3,4]; for(var i in arr){ //console.log(i,arr[i]); } arr.forEach(function(val,index){ //console.log(index,val); }); $.each(arr,function(i,n){ console.log(i,n); }) </script> </head> <body> </body> </html>