JavaScript计算字符串中每个字符出现次数的小例子_javascript技巧
来源：动视网
责编：小采
时间：2020-11-27 21:10:33
JavaScript计算字符串中每个字符出现次数的小例子_javascript技巧
JavaScript计算字符串中每个字符出现次数的小例子_javascript技巧:代码如下: 代码如下:function numInstring(str){ str=str.replace(/ /ig,); var strArr=str.split(); var result=[],beforeLength,afterLength,reg; for(var i=0;i if(str.indexOf(strArr[i])!=
导读JavaScript计算字符串中每个字符出现次数的小例子_javascript技巧:代码如下: 代码如下:function numInstring(str){ str=str.replace(/ /ig,); var strArr=str.split(); var result=[],beforeLength,afterLength,reg; for(var i=0;i if(str.indexOf(strArr[i])!=
代码如下:
代码如下:
function numInstring(str){
str=str.replace(/ /ig,"");
var strArr=str.split("");
var result=[],beforeLength,afterLength,reg;
for(var i=0;i
if(str.indexOf(strArr[i])!=-1){
beforeLength=str.length;
reg=new RegExp(strArr[i],"ig");
str=str.replace(reg,"");
afterLength=str.length;
result.push(strArr[i]+":"+(beforeLength-afterLength));
}
}
return result;
}
var result=numInstring("This section of the site is dedicated to the JavaScript language itself, the parts that are not specific to Web pages or other host");
console.log(result);
/*result:
["T:17", "h:7", "i:9", "s:10", "e:14", "c:5", "o:8", "n:3", "f:3", "d:3", "a:9", "J:1", "v:1", "r:5", "p:4", "l:2", "g:3", "u:1", ",:1", "W:1", "b:1"]
*/
JavaScript计算字符串中每个字符出现次数的小例子_javascript技巧
JavaScript计算字符串中每个字符出现次数的小例子_javascript技巧:代码如下: 代码如下:function numInstring(str){ str=str.replace(/ /ig,); var strArr=str.split(); var result=[],beforeLength,afterLength,reg; for(var i=0;i if(str.indexOf(strArr[i])!=
