JavaScript 删除字符串中的多个空格

Question

多个连续的空格让我在我的 JS 脚本中感到头疼。 我试过这样做：

 const originalStr = 'Hello there how are you' const actual = originalStr.replace(/ /g, ' ') const expected = 'Hello there how are you' console.log(`originalStr = '${originalStr}'`) console.log(`actual = '${actual}'`) console.log(`expected = '${expected}'`) console.log(`actual === expected...`, actual === expected)

但正如你所见，它不起作用。 当有 3 个或更多连续空格时，它会失败。 有没有一种简单的方法来确保没有连续的空格？ TIA

Answer 1

只需稍微修改您的正则表达式：

 const originalStr = 'Hello there how are you' const actual = originalStr.replace(/ +/g, ' ') const expected = 'Hello there how are you' console.log(`originalStr = '${originalStr}'`) console.log(`actual = '${actual}'`) console.log(`expected = '${expected}'`) console.log(`actual === expected...`, actual === expected)

Answer 2

使用/ +/g编辑您的正则表达式

 const originalStr = 'Hello there how are you' const actual = originalStr.replace(/ +/g, ' ') const expected = 'Hello there how are you' console.log(`originalStr = '${originalStr}'`) console.log(`actual = '${actual}'`) console.log(`expected = '${expected}'`) console.log(`actual === expected...`, actual === expected)