[javascript]获取字符串中每个字符出现的次数

var str = "adadseffouyangpingfsffffftsdg";      
function getCounts(str){      
    var t = str, result = {};      
    while(t){ // if this l exists      
      var _st = t.substr(0,1);      
      var m = t.replace(new RegExp(_st,'gi'),'');  
	  //console.log(t.match(new RegExp(_st,'gi')).length);  
      //var m = t.repalce(/_st/gi,''); 错误，不要尝试将字符串转化为正则表达式    
      //alert(m);   
      result[_st] = t.length - m.length;      
      t = m;        
    }      
    return result;      
};  

console.log(getCounts(str));

var str = "adadseffouyangpingfsffffftsdg";

function getCounts(str){

var t = str, result = {};

while(t){ // if this l exists

var _st = t.substr(0,1);

var m = t.replace(new RegExp(_st,'gi'),'');

//console.log(t.match(new RegExp(_st,'gi')).length);

//var m = t.repalce(/_st/gi,''); 错误，不要尝试将字符串转化为正则表达式

//alert(m);

result[_st] = t.length - m.length;

t = m;

}

return result;

};

console.log(getCounts(str));

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