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js对象和数组的遍历

2017-05-23 10:51 330 查看

<!DOCTYPE html>

<html>

<head>

<meta charset="utf-8">

<title>com)</title>

</head>

<body>





first
SECOND

<script>

var person = [];

person["firstName"] = "John";

person["lastName"] = "Doe";

person["age"] = 46;
myObj = {site:"教程", url:"www..com", like:460,}
var flag;
if (typeof myObj !== "undefined" && myObj !== null) {
flag=100;}
else{
flag=0;}

for (var obj in myObj)

{

document.write("" + obj + "");

}

points = [40, 100, 1, 5, 25, 10];

document.getElementById("demo").innerHTML =flag;

for (var obj in myObj)

{

document.write("" + obj + "=" + eval("myObj."+obj) + "");

}

var arr = new Array(13.5,3,4,5,6);

for(var i=0;i<arr.length;i++){

arr[i] = arr[i]/2.0;
document.write("" +"arr["+i+"]"+"="+ arr[i] + "");

}

</script>

</body>

</html>

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标签： javascript

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