<script type=”text/javascript”>
var a = 1;
var b = 2;
if(a < b){
alert(“对”);
}
var i=0;
var x=””;
do{
i = i + 2;
x = x + i + “<br>”;
}while(i<10);
//alert(i);
document.write(x);
</script>
<script type=”text/javascript”>
var i = 0;
var x = “”;
while(i < 10){
i = i + 1;
x = x + i + “<br>”;
}
document.write(x);
</script>
<script type=”text/javascript”>
var x = 10;
for(var i=0; i<x; i++){
alert(i);
}
</script>
<script type=”text/javascript”>
var wname;
for(wname in window){
document.write(wname);
}
</script>
<script type=”text/javascript”>
var i = 0;
switch(i){
case 1;
alert(1);
break;
case 1;
alert(1);
break;
case 1;
alert(1);
break;
}
</script>