如何将单词变成整数

Question

我需要一个函数，该函数需要一个字符串并将等于数字的单词转换为整数。'一五七三'-> 1573

Answer 1

这里是一种方法：

const numWords = ['zero', 'one', 'two', 'three', 'four', 'five', 'six', 'seven', 'eight', 'nine'];

const changeStrToNum = str => {
  let num = '';
  str.split` `.forEach(numWord => {
    num += numWords.indexOf(numWord);
  });
  return +num;
};

console.log(changeStrToNum('one five seven three'));

Answer 2

您可以使用带有数字名称及其值的对象，然后返回一个新数字。

var words = { zero: 0, one: 1, two: 2, three: 3, four: 4, five: 5, six: 6, seven: 7, eight: 8, nine: 9 },
    string = 'one five seven three',
    value = +string
        .split(' ')
        .map(w => words[w])
        .join('');        

console.log(value);

Answer 3

虽然看上去与JavaScript numbers to Words类似，但您可以针对自己的用例反转此代码

发布要点与参考https://gist.github.com/RichardBronosky/7848621/ab5fa3df8280f718c2e5263a7eabe004790e7e20的代码

Answer 4

您可以先在空间上拆分，然后再使用reduce

let words  = { zero: 0, one: 1, two: 2, three: 3, four: 4, five: 5, six: 6, seven: 7, eight: 8, nine: 9 }
let string = 'one five seven three'
let value  = string
             .split(' ')
             .reduce((o, i) => o + words[i] ,'')      

console.log(value);