51问答网 > 要个正则表达式让输入框不能为空，也不能为空格等

要个正则表达式让输入框不能为空，也不能为空格等

2025-03-14 16:37:42
推荐回答（3个）
回答1：

  1. 只是不能输入空格：

  2. 不能输入空格及英文状态下的逗号： 

  3. 代码如下:

回答2：

var reg = /^\s*$/g;
// 如果是空，或者""
if(name.value=="" || reg.test(name.value)){

}

回答3：

public static bool IsAllSpace(String text) { Regex objNotPositivePattern=new Regex("^[\s]*$"); return objNotPositivePattern.IsMatch(text) } 返回bool值，如果全为空格返回true,反之为false. 剩下的就是你自己程序的判断操作了。

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