<script language="javascript"> var str = "I am a boy, I like programming!"document.write("a出现的次数为:<br>") //以下程序统计a的次序 var icount = 0 for(i=0; i<str.length; i++) { //你拼写错了,不是chatAt而应该是charAt if(str.charAt(i)=="a") { icount++ } } document.write(icount+"<br>") </script>
<script language="javascript"> var str = "I am a boy, I like programming!"document.write("a出现的次数为:<br>") //以下程序统计a的次序 var icount = 0 for(i=0; i<str.length; i++) { if (str.charAt(i)=='a') icount++; } document.write("<br>") document.write(icount); </script>
这样更简单些..<script language="javascript"> var str = "I am a boy, I like programming!" document.write("a出现的次数为:<br>") //以下程序统计a的次序 var icount = 0; icount = str.split("a").length-1; document.write(icount+"<br>") </script>
var str = "I am a boy, I like programming!"document.write("a出现的次数为:<br>")
//以下程序统计a的次序
var icount = 0
for(i=0; i<str.length; i++)
{
//你拼写错了,不是chatAt而应该是charAt
if(str.charAt(i)=="a")
{
icount++
}
}
document.write(icount+"<br>")
</script>
var str = "I am a boy, I like programming!"document.write("a出现的次数为:<br>")
//以下程序统计a的次序
var icount = 0
for(i=0; i<str.length; i++)
{
if (str.charAt(i)=='a') icount++;
}
document.write("<br>")
document.write(icount);
</script>
var str = "I am a boy, I like programming!"
document.write("a出现的次数为:<br>")
//以下程序统计a的次序
var icount = 0;
icount = str.split("a").length-1;
document.write(icount+"<br>")
</script>