查找字符串中不重复的字符 [英] Find the characters in a string which are not duplicated

问题描述

我必须在JavaScript中创建一个函数，以删除字符串中所有重复的字母.到目前为止，我已经能够做到这一点:如果我有"anaconda"一词，则应在显示"cod"时将其显示为"anaconda".这是我的代码:

I have to make a function in JavaScript that removes all duplicated letters in a string. So far I've been able to do this: If I have the word "anaconda" it shows me as a result "anaconda" when it should show "cod". Here is my code:

function find_unique_characters( string ){
    var unique='';
    for(var i=0; i<string.length; i++){
        if(unique.indexOf(string[i])==-1){
            unique += string[i];
        }
    }
    return unique;
}
console.log(find_unique_characters('baraban'));

推荐答案

我们现在还可以使用过滤器方法清理内容:

We can also now clean things up using filter method:

function removeDuplicateCharacters(string) {
  return string
    .split('')
    .filter(function(item, pos, self) {
      return self.indexOf(item) == pos;
    })
    .join('');
}
console.log(removeDuplicateCharacters('baraban'));

工作示例:

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