JavaScript 对象 实例

<script type="text/javascript">

var txt="Hello World!"
document.write(txt.length)

</script>

<script type="text/javascript">
document.write(Date())
</script>

<script type="text/javascript">

function sortNumber(a, b)
{
return a - b
}

var arr = new Array(6)
arr[0] = "10"
arr[1] = "5"
arr[2] = "40"
arr[3] = "25"
arr[4] = "1000"
arr[5] = "1"

document.write(arr + "<br />")
document.write(arr.sort(sortNumber))

</script>

<script type="text/javascript">
var b1=new Boolean( 0)
var b2=new Boolean(1)
var b3=new Boolean("")
var b4=new Boolean(null)
var b5=new Boolean(NaN)
var b6=new Boolean("false")

document.write("0 是逻辑的 "+ b1 +"<br />")
document.write("1 是逻辑的 "+ b2 +"<br />")
document.write("空字符串是逻辑的 "+ b3 + "<br />")
document.write("null 是逻辑的 "+ b4+ "<br />")
document.write("NaN 是逻辑的 "+ b5 +"<br />")
document.write("字符串 'false' 是逻辑的 "+ b6 +"<br />")
</script>

<script type="text/javascript">

document.write(Math.max(5,7) + "<br />")
document.write(Math.max(-3,5) + "<br />")
document.write(Math.max(-3,-5) + "<br />")
document.write(Math.max(7.25,7.30))

</script>