<script>
my_string = "A110B121C119D1861"
a_value=instr(my_string,"ppp")
if (a_value=="0"){
alert("aaaaa");
}
</script>

<script language="javascript">
var my_string;
var a_value;
my_string = "A110B121C119D1861";
document.write(my_string+"<br>234");
a_value=my_string.indexOf("ppp");
if(a_value==0)
{
 alert("aaaaa");
}
</script>

[CODE]<script>
my_string = "A110B121C119D1861";
a_value=my_string.indexOf("ppp");
if (a_value="0"){
alert("aaaaa");
}
</script>[/CODE]

<script>
my_string = "A110B121C119D1861"
a_value=instr(my_string,"ppp")
if (a_value=="0"){
alert("aaaaa");
}
</script>
我想用 instr 来判断 my_string 是否包含有ppp

谢谢！！