JavaScript 文本到数字转换器故障

如何解决JavaScript 文本到数字转换器故障

我有将文本转换为数字的代码：

var vals= ["a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z","0","1","2","3","4","5","6","7","8","9"," ",",".","!","?","/","\\","#","@","=","-","_",":"];
var input = prompt("Input:");
var inn = input.toLowerCase + "";
var ins = inn.split("");
var pswrd = prompt("Password(LowerCase):")
var pin = pswrd.toLowerCase + "";
var pins = pin.split("");
var out = "";
var i;
var mul = Math.floor((Math.random() * 30) + 1);
for(i=0;i<ins.length;i++){
  var num = ins[i]
  var val = vals.indexOf(num)
  var out = out+val*mul+" "
}
var out = out+"ↀ"
for(i=0;i<pins.length;i++){
  var num = pins[i]
  var val = vals.indexOf(num)
  var out = out+val*mul+" "
}
alert('Result:' + out);

但是由于原因，当我运行它时会发生这种情况：

输入：你好

密码：嗨

输出：50 200 130 20 190 80 140 130 360 190 140 -10 140 220 40 170 -10 0 180 40 -10 -10 360 -10 360 -10 0 10 360 -10 0 10 360 -10 0 10 10 360 -10 ↀ50 200 130 20 190 80 140 130 360 190 140 -10 140 220 40 170 -10 0 180 40 -10 -10 360 -10 10 30 10 30 10 30 10 30 160 10

我不知道发生了什么？有人可以帮忙吗...

提前致谢！

解决方法

您需要调用 toLowerCase 方法，而不是像访问对象的属性一样尝试访问它。我怀疑您已经根据连接的空字符串从这些行中收到错误 - 这使您的错误消失，但没有“修复”您的代码。

顺便说一句，您可以调用多个方法，而不是为数据突变的每一步都创建一个新变量。当您已经将当前索引存储在 indexOf 中时，我也不知道为什么要在循环中调用 i？

无论如何，我不会为你重构整个代码块......但试试这个：

var vals= ["a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z","0","1","2","3","4","5","6","7","8","9"," ",",".","!","?","/","\\","#","@","=","-","_",":"];

var input = prompt("Input:");
var pswrd = prompt("Password(LowerCase):")

var inn = input.toLowerCase().split("");
var pin = pswrd.toLowerCase().split("");

var out = "";
var i;

var mul = Math.floor((Math.random() * 30) + 1);

for(i=0;i<inn.length;i++){
  var num = inn[i]
  var val = vals.indexOf(num)
  var out = out+val*mul+" "
}

var out = out+"ↀ"

for(i=0;i<pin.length;i++){
  var num = pin[i]
  var val = vals.indexOf(num)
  var out = out+val*mul+" "
}

alert('Result:' + out);

,

你的编码方式很糟糕，javascript 值得更好

const vals = 'abcdefghijklmnopqrstuvwxyz0123456789,.!?/\\#@=-_:' 

var mul = Math.floor((Math.random() * 30) + 1),inn = (prompt('Input:')).toLowerCase(),pin = (prompt('Password(LowerCase):')).toLowerCase()
  ;
var out  = ''

for (let letter of inn)  
  out += `${ vals.indexOf( letter ) * mul} `;

out += 'ↀ'

for (let letter of pin)  
  out += `${ vals.indexOf( letter ) * mul} `;

alert('Result:' + out)