1 <script> 2 var txt="ABCDEFGHIJKLMNOPQRSTUVWXYZvshjkdjlksdhbasndhbawnieoqawinsbdvhzohcvikzbncxiouj"; 3 var index=0,count=0,position=0; 4 index = txt.indexOf("h",position); 5 document.getElementById("demo").innerHTML=index; 6 while(index!=-1){ 7 count++; 8 position = index + 1; 9 index = txt.indexOf("h",position); 10 } 11 document.getElementById("demo").innerHTML=count; 12 </script>
JavaScript String 检测字母出现个数
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转载自www.cnblogs.com/ghostang/p/9855510.html
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