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var str = "Zhang is a Family name which is also my Family name I like my Family then like other Family";
var count = 0;
var fp = 0;
while(fp != -1){
fp = str.indexOf("Family",fp + 6);
count++;
}
alert(count);
[/code]
t
var str = "Zhang is a Family name which is also my Family name I like my
Family then like other Family";
var count = 0;
var fp = 0;
while(true)
{
fp = str.indexOf("Family",fp);
if(fp!=-1)
{
fp++;
count++;
}
else
break;
}
alert(count);
tvar str = "Zhang is a Family name which is also my Family name I like my Family then like other Family";
alert(str.match(/\bFamily\b/gi).length);
<html>
<head>
<titel>aaaa</title>
</head>
<body >
<script>
var count = 0;
var str="bbccaaddaaddaaddaaddaaddaaddaad";
var fp=0;
while(fp!=-1){
if(fp==0){
fp=str.indexOf("aa",fp);
}else{
fp=str.indexOf("aa",fp+2);
}
count=count+1;
}
alert(count);
</script>
</body>
</html>样例,楼主看看就懂了!
var str = "FamilyZhang is a Family name which is also my Family name I like my Family then like other Family";
var count = 0;
var fp = 0;
while(fp != -1)
{
fp = str.indexOf("Family",fp);
if(fp != -1)
{
fp++;
count ++;
}
}
alert(count);
\b没有必要吧, 直接alert(str.match(/Family/g).length);