统计字符串中某个字符的个数 

<!DOCTYPE html>
<html>
<body>
     <title>统计字符串中某个字符的个数</title>
     <script>
         var countryList=["one","two","three","four","five","six"];
         var count=0;
         document.write("在以下字符中：<br/>");
         for(var i in countryList){
            document.write(countryList[i]+" ");
            if(countryList[i].indexOf("o")!=-1)
            count++;
        }
   document.write("<br/> 字符o有"+count+"个。");
     </script>
 </body>
</html>

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posted @ 2019-01-18 20:38  杨超越的秃头姐姐  阅读(380)  评论(0)    收藏  举报