javascript - 表单验证 - 电子邮件/电话号码

Question

我的验证函数有问题，我只在一个函数中实现了它，我想添加电子邮件验证，例如 @ 和数字 1-9。如何添加？

html:

<form onsubmit="return validate();" name="formValidation">
    <label>First Name:</label>
    <input type="text" name="firstName" /><br /><br />
    <label>Last Name:</label>
    <input type="text" name="lastName" /><br /><br />
    <label>E_mail:</label>
    <input type="text" name="Email" /><br /><br />
    <label>Confirm E_mail:</label>
    <input type="text" name="confirmEmail" /><br /><br />
    <label>Address:</label>
    <input type="text" name="Address" /><br /><br />
    <label>Telephone nr:</label>
    <input type="text" name="telephoneNr" /><br /><br />
    <br />
    <p>submit your form: </p><input type="submit" value="Submit" />
</form>

js:

function validate(){
    if(document.formValidation.firstName.value == "" ||
    document.formValidation.lastName.value == "" ||
    document.formValidation.Email.value == "" ||
    document.formValidation.confirmEmail.value == "" ||
    document.formValidation.Address.value == "" ||
    document.formValidation.telephoneNr.value == "")
    {
        alert("Please fill all the boxes before submitting!");
        return false;
    } else {
        alert('Your form has been submitted!');
    }

}

Answer 1

来自 http://www.w3resource.com/javascript/form/email-validation.php :

此函数将使用 javascript 验证电子邮件:

function ValidateEmail(mail)   
{  
 if (/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/.test(mail))  
  {  
    return (true)  
  }  
    alert("You have entered an invalid email address!")  
    return (false)  
}  

验证电话号码:

function validatePhone(phone) {
    var error = "";
    var stripped = phone.replace(/[\(\)\.\-\ ]/g, '');

   if (stripped == "") {
        error = "You didn't enter a phone number.";
    } else if (isNaN(parseInt(stripped))) {
        phone = "";
        error = "The phone number contains illegal characters.";

    } else if (!(stripped.length == 10)) {
        phone = "";
        error = "The phone number is the wrong length. Make sure you included an area code.\n";
    }
}