Question

我正在寻找与 javascript 的 string.replace 函数一起使用的正则表达式，以将字符串中的所有字符替换为新字符（空格除外）。

例如这个字符串： "一串单词和空格"

会变成这个字符串： “################# ######”

Answer 1

全局对 \S 进行正则表达式替换：

var input = "A string of words and spaces";
var output = input.replace(/\S/g, "#");
console.log(input + "\n" + output);

Answer 2

使用 \S 匹配任何非空白字符。

https://regex101.com/r/9jY2hn/1

const regex = /\S/gm;
const str = `A string of words and spaces`;
const subst = `#`;

// The substituted value will be contained in the result variable
const result = str.replace(regex, subst);

console.log('Substitution result: ', result);

Answer 3

不使用正则表达式（不推荐）：

const phrase = "A string of words and spaces"
const word_replacement = '#'
const array_phrase = [...phrase]
const replaced_array_phrase = array_phrase.map(word => {
  console.log(word)
  return word === " "? " ": word_replacement
})
const phrase_replaced_string = replaced_array_phrase.join('')

console.log(array_phrase)
console.log(replaced_array_phrase)
console.log(phrase_replaced_string)

//one liner
const replacedOneLine = [..."A string of words and spaces"].map(word => word === " "? " ": "#").join('')
console.log(replacedOneLine)

替换字符串中除空格之外的所有字符

3 个答案: