for (variable in object)
statement
for (var variable in object)
statement
<script type="text/javascript" language="javascript">
<!--
var myObj = {a:10, b:20, c:30}; //定义一个对象
for (gobj in myObj) {
//输出对象属性值
document.write("myObj." , gobj, "=", myObj[gobj], "<br>");
}
//定义一个数组
var myArray = [1, true, "hello"];
for (var val in myArray) {
document.write("myArray[", val, "]=", myArray[val], "<br>");
}
-->
</script>
myObj.a=10
myObj.b=20
myObj.c=30
myArray[0]=1
myArray[1]=true
myArray[2]=hello
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