JavaScript 刪除字符串中的多個空格

Question

多個連續的空格讓我在我的 JS 腳本中感到頭疼。 我試過這樣做：

 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)

但正如你所見，它不起作用。 當有 3 個或更多連續空格時，它會失敗。 有沒有一種簡單的方法來確保沒有連續的空格？ TIA

Answer 1

只需稍微修改您的正則表達式：

 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編輯您的正則表達式

 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)