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

<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！！