​x
 
<!DOCTYPE html>
<html>
<body>
​
<h1>JSON 数组</h1>
​
<p>使用 for in 循环遍历数组</p>
​
<p id="demo"></p>
​
<script>
var myObj, i, x = "";
myObj = {
  "name":"Bill Gates",
  "age":62,
  "cars":[ "Porsche", "BMW", "Volvo" ]
};
​
for (i in myObj.cars) {
  x += myObj.cars[i] + "<br>";
}
document.getElementById("demo").innerHTML = x;
</script>
​
</body>
</html>
​