js问题，给id添加样式_IT百科

function expand(el)

{

var childObj = document.getElementById("child" + el)

var box = document.getElementById("box")

if (childObj.style.display == 'none')

{

childObj.style.display = 'block'

box.style......//按照上面的写法就可以了

}

else

{

childObj.style.display = 'none'

}

return

}

</SCRIPT>

<!DOCTYPE HTML>

<html>

<head>

#end2{

color:#a00000

font-size:20px

font-weight:700

}

</style>

Date.prototype.diff = function (date)

{

return (this.getTime () - date.getTime ()) / (24 * 60 * 60 * 1000)

}

onload = function ()

{

var now = new Date ('2015/02/19 00:00:00')

var date = new Date ()

var diff = now.diff (date)

document.getElementById ('end2').innerHTML = Math.floor (diff)

}

</script>

</head>

<body>

<span id="end2"></span> 天

</body>

</html>

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js问题，给id添加样式