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/*
* 程序片段一
*/
<script type="text/javascript">
function disp(){
var now=new Date();
var year=now.getYear()+1900;
var month=now.getMonth()+1;
var qdate=now.getDate();
var day=now.getDay();
var arr_week= new Array("星期日","星期一","星期二","星期三","星期四","星期五","星期六");
var week=arr_week[day];
var timer="今年是"+year+"年"+month+"月"+qdate+"日"+week;
alert(timer);
}
</script>
/*
* 程序片段二:循环语句
*/
<script type="text/javascript">
var username="tomloty";
switch(username){
case "xxc":alert("ddd");break;
case "ddds":alert("asdf");break;
/*
* N条语句
*/
default:alert('nome');//如果以上条件都不满足执行此条
}
</script>
/*
* 片段三:条件if语句
*/
<script type="text/javascript">
if (!=(1>2)) {
//dosomething
} else{
//dosomething
}
</script>
<script type="text/javascript">
if () {
} else if (){
} else if (){
}else{
}
</script>
/*
* for语句循环
*/
<script type="text/javascript">
var sum=0;
for (var i=1;i<=10;i++) {
sum+=i;
}
alert(sum);
</script>
/*
* while循环可能一次都不执行
*/
<script type="text/javascript">
var sum1=0;
var i=1;
while (i<=10){
sum1+=i;
i++;
}
alert(sum1);
</script>
<script type="text/javascript">
//先执行一次循环体,在判断条件是否执行
var sum2=0;
var i2=0;
do{
sum2+=i2;
i2++;
}while(i<=10);
alert(sum2);
</script>
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