1. for循环
<!DOCTYPE html>
<html>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<body> <script charset = "utf-8"> nameList = ["kl", "td", "mgeno", "bobo"];
for (var i = 0; i < nameList.length; i++)
{
document.write(nameList[i] + "<br>");
}
</script> </body>
</html>
结果：
2. for/in循环直接遍历循环对象的属性。
<!DOCTYPE html>
<html>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<body> <script charset = "utf-8"> var manInfo = {name: "tim", age: 20, grade: 98};
for (var i in manInfo)
{
var info = i + ": " + manInfo[i];
document.write(info + "<br>");
} </script> </body>
</html>
结果：