JavaScript中if else条件语句使用范例
下面的代码判断当前时间的小时数是否超过20点,如果小于则显示Good day否则显示Good evening
<!DOCTYPE html>
<html>
<body>
<p>Click the button to get a time-based greeting.</p>
<button onclick="myFunction()">Try it</button>
<p id="demo"></p>
<script>
function myFunction()
{
var x="";
var time=new Date().getHours();
if (time<20)
{
x="Good day";
}
else
{
x="Good evening";
}
document.getElementById("demo").innerHTML=x;
}
</script>
</body>
</html>
