1.通过正则匹配解决问题 此处涉及\s:匹配任意空白符 \S:匹配任意非空白字符 <input type="text" onkeyup="this.value=this.value.replace(/\s+/g,'')"> 相关文章: 2021-04-06 2022-12-23 2021-11-22 2022-12-23 2022-12-23 2022-12-23 2021-08-30