Question

我有以下json数组：

int main()
{
    std::string html = "<html>\n"\
                 "<header>" \
                 "<title>This is title</title></header>\n" \
                 "<body>\n"\
                 "Hello world\n"\
                 "</body>\n"\
                 "</html>";
    html[1] = 'r';
    std::cout<<html;
    return 0;
}

如何使用javascript从中删除重复的值，所以最后我得到了：

["aa", "bb", "cc", "dd", "bb"]

Answer 1

您可以使用Array.filter()：

var arr = ["aa", "bb", "cc", "dd", "bb"];
var res = arr.filter(function(item, index){
  if(arr.lastIndexOf(item) === index){
    return true;
  }
}).sort(function(a, b){
  return a > b;
});
console.log(res);

Answer 2

console.log(_.uniq(["aa", "bb", "cc", "dd", "bb"]));

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从Java脚本中的字符串数组中删除重复项

2 个答案: