forEarch 和 for in
for in
2023-09-11 14:22:19 时间
forEarch 遍历数组,遍历的过程中不能被终止,必须每一个值遍历一遍后才能停下来,for in遍历对象中的属性
代码:
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <meta http-equiv="X-UA-Compatible" content="ie=edge"> <title>foreach</title> </head> <body> </body> <script> var myArry =[1,2,3,4]; // myArry.desc ='four'; myArry.forEach((value,index,arr)=>{ console.log(value,index); }); var myArry={ name:'zxw', email:'123', phone:'345' } for(var value in myArry ) { console.log(value); } </script> </html>
输出:
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