Question

此电子邮件的RegEx在http://scriptular.com上传递，但所有浏览器都失败。有什么想法吗？我尝试了很多方法;但在这一点上，我一无所知。

   <!doctype html>
   <html lang="en">
   <head>
   <meta charset="UTF-8">
   <title>RegEx Test</title>

    <script type="text/javascript">
      function saveSignUp(){

      var warning = "The following field(s) require an entry: \n \n";
      var same = warning;
      var email = document.forms[0].email.value;
      // FIRST TEST
      /*var regExEmail= /^([a-zA-Z0-9_.-])+@([a-zA-Z0-9_.-])+\.([a-zA-Z])+/;*/
      // SECOND TEST
      var regExEmail= /[a-zA-Z0-9_.-]+@[a-zA-Z0-9_.-]+\.[a-zA-Z]+/;
      if(email == ""){ warning += " - Email is required \n"; }
      else if(email != regExEmail){ warning += " - E-mail not formatted properly \n"; }

      if (warning == same){
        return true; 
      } 
      else { 
        alert(warning);     
      }
    return false;
    }
   </script>
    </head>
    <body>
      <form method="post" onsubmit="return saveSignUp()" action="signupSucces.html" >
        <input type="text" placeholder="Email" name="email">
        <input type="submit" class="button wide" value="Request an Account">        
      </form>
    </body>
   </html>

Answer 1

if(email != regExEmail)

这不是你测试正则表达式匹配的方法。请改用：

if (!regExEmail.test(email))

并且，你应该在^ .. $中包含你的正则表达式以检查整个字符串匹配，而不仅仅是它的子字符串。

var regExEmail= /^[a-zA-Z0-9_.-]+@[a-zA-Z0-9_.-]+\.[a-zA-Z]+$/;

RegEx通过但在浏览器上失败

1 个答案: