<!DOCTYPE html>
<html>
<body>
<p>点击下面的按钮，循环遍历对象 "person" 的属性。</p>
<button onclick="myFunction()">点击这里</button>
<p id="demo"></p>
<script>
function myFunction()
{
var x;
var txt="";
var person={fname:"Bill",lname:"Gates",age:56};
for (x in person)
{
alert("x:"+x);
txt=txt + person[x];
alert("txt:"+txt);
}
document.getElementById("demo").innerHTML=txt;
}
</script>
</body>
</html>
结果：BillGates56
js中的in_for循环
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转载自dwdwgo.iteye.com/blog/2307541
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