小编scu*_*ver的帖子

我正在尝试列出所有三个字母的排列,这是我的代码 -

  window.permute = function(){
    var alphabet = "abcdefghijklmnopqrstuvwxyz";
    var searchTerm ="aaa";
    var position = 2; 
    changeString(searchTerm, position); 
}

window.changeString = function(searchTerm, position){
    if (position <0){
        alert(newString);

    return; 
    }
    var alphabet = "abcdefghijklmnopqrstuvwxyz"
    for (j=0; j < 26;j++){
        var newString = searchTerm.substr(0, position) + alphabet[j] + searchTerm.substr(position+1);
        var newPosition = position -1; 
        changeString(newString,newPosition);
    }
    return;
}

它不起作用,我不知道为什么 - 有人可以帮忙吗？