Javascript $（“表单”）。提交不适用于ipad和iphone

我有一个简单的post表单，可以在所有浏览器中使用，但当它出现在ipad/iphone上时（顺便说一句，我是这个世界上iOS的新手），我遇到了一个问题

<form action="/Home/Contact" id="contactform" method="post" novalidate="novalidate">                
<div class="response"></div>
    <p>
        <input class="textfield" data-val="true" data-val-length="The Name must be 50 characters or less" data-val-length-max="50" data-val-regex="The Name should not contain special characters" data-val-regex-pattern="^[A-Za-z0-9-_ ]+$" data-val-required="The Name field is required." id="Name" name="Name" placeholder="Name" type="text" value="">
        </p><div class="error-holder"><span class="field-validation-valid" data-valmsg-for="Name" data-valmsg-replace="true"></span></div>
    <p></p>
    <p>
        <input class="textfield" data-val="true" data-val-email="The Email field is not a valid e-mail address." data-val-length="The Email must be 200 characters or less" data-val-length-max="200" data-val-required="The Email field is required." id="Email" name="Email" placeholder="Email" type="text" value="">
        </p><div class="error-holder"><span class="field-validation-valid" data-valmsg-for="Email" data-valmsg-replace="true"></span></div>
    <p></p>
    <p>
        <input class="textfield" data-val="true" data-val-length="The Subject must be 255 characters or less" data-val-length-max="255" data-val-required="The Subject field is required." id="Subject" name="Subject" placeholder="Subject" type="text" value="">
        </p><div class="error-holder"><span class="field-validation-valid" data-valmsg-for="Subject" data-valmsg-replace="true"></span></div>
    <p></p>
    <p>
        <textarea class="textarea" cols="20" data-val="true" data-val-length="The Message must be 2000 characters or less" data-val-length-max="2000" data-val-required="The Message field is required." id="Message" name="Message" placeholder="Message" rows="8"></textarea>
        </p><div class="error-holder"><span class="field-validation-valid" data-valmsg-for="Message" data-valmsg-replace="true"></span></div>
    <p></p>
    <p>
        <button type="submit" name="submit" id="submitButton" title="Click here to submit your message!" class="btn btn-red">Submit</button>
    </p>
</form>

当我单击submit时，代码根本没有执行

更新1:

如果我更改为

$（“#contactform”）。提交（…）

或

$（“#提交按钮”）。单击（…）

在iphone和ipad上仍然不走运

更新2

如果我像@Sridhar-R一样使用

action=“javascript:chk（）”

。但是为什么javascript post在

action=“/Home/Contact”

-这都是因为在

iphone/ipad中
javascript post只能以这种方式工作？
试试这个

<form action="javascript:chk()" id="contactform" method="post" novalidate="novalidate">                
<div class="response"></div>
    <p>
        <input class="textfield" data-val="true" data-val-length="The Name must be 50 characters or less" data-val-length-max="50" data-val-regex="The Name should not contain special characters" data-val-regex-pattern="^[A-Za-z0-9-_ ]+$" data-val-required="The Name field is required." id="Name" name="Name" placeholder="Name" type="text" value="">
        </p><div class="error-holder"><span class="field-validation-valid" data-valmsg-for="Name" data-valmsg-replace="true"></span></div>
    <p></p>
    <p>
        <input class="textfield" data-val="true" data-val-email="The Email field is not a valid e-mail address." data-val-length="The Email must be 200 characters or less" data-val-length-max="200" data-val-required="The Email field is required." id="Email" name="Email" placeholder="Email" type="text" value="">
        </p><div class="error-holder"><span class="field-validation-valid" data-valmsg-for="Email" data-valmsg-replace="true"></span></div>
    <p></p>
    <p>
        <input class="textfield" data-val="true" data-val-length="The Subject must be 255 characters or less" data-val-length-max="255" data-val-required="The Subject field is required." id="Subject" name="Subject" placeholder="Subject" type="text" value="">
        </p><div class="error-holder"><span class="field-validation-valid" data-valmsg-for="Subject" data-valmsg-replace="true"></span></div>
    <p></p>
    <p>
        <textarea class="textarea" cols="20" data-val="true" data-val-length="The Message must be 2000 characters or less" data-val-length-max="2000" data-val-required="The Message field is required." id="Message" name="Message" placeholder="Message" rows="8"></textarea>
        </p><div class="error-holder"><span class="field-validation-valid" data-valmsg-for="Message" data-valmsg-replace="true"></span></div>
    <p></p>
    <p>
        <button type="submit" name="submit" id="submitButton" title="Click here to submit your message!" class="btn btn-red">Submit</button>
    </p>
</form>

这样它就工作了。但是为什么它不能以另一种方式工作呢？因为您的表单已经有了再次提交表单的操作，所以您的处理程序尝试使用ajax发布，这就是为什么它不能工作的原因尝试使用任何一个它都可以100%工作的副本
<form action="javascript:chk()" id="contactform" method="post" novalidate="novalidate">                
<div class="response"></div>
    <p>
        <input class="textfield" data-val="true" data-val-length="The Name must be 50 characters or less" data-val-length-max="50" data-val-regex="The Name should not contain special characters" data-val-regex-pattern="^[A-Za-z0-9-_ ]+$" data-val-required="The Name field is required." id="Name" name="Name" placeholder="Name" type="text" value="">
        </p><div class="error-holder"><span class="field-validation-valid" data-valmsg-for="Name" data-valmsg-replace="true"></span></div>
    <p></p>
    <p>
        <input class="textfield" data-val="true" data-val-email="The Email field is not a valid e-mail address." data-val-length="The Email must be 200 characters or less" data-val-length-max="200" data-val-required="The Email field is required." id="Email" name="Email" placeholder="Email" type="text" value="">
        </p><div class="error-holder"><span class="field-validation-valid" data-valmsg-for="Email" data-valmsg-replace="true"></span></div>
    <p></p>
    <p>
        <input class="textfield" data-val="true" data-val-length="The Subject must be 255 characters or less" data-val-length-max="255" data-val-required="The Subject field is required." id="Subject" name="Subject" placeholder="Subject" type="text" value="">
        </p><div class="error-holder"><span class="field-validation-valid" data-valmsg-for="Subject" data-valmsg-replace="true"></span></div>
    <p></p>
    <p>
        <textarea class="textarea" cols="20" data-val="true" data-val-length="The Message must be 2000 characters or less" data-val-length-max="2000" data-val-required="The Message field is required." id="Message" name="Message" placeholder="Message" rows="8"></textarea>
        </p><div class="error-holder"><span class="field-validation-valid" data-valmsg-for="Message" data-valmsg-replace="true"></span></div>
    <p></p>
    <p>
        <button type="submit" name="submit" id="submitButton" title="Click here to submit your message!" class="btn btn-red">Submit</button>
    </p>
</form>

function chk(e){

    if (!$("form").valid()) 
        return false;   

    var name = $('input#Name').val();
    var email = $('input#Email').val();
    var subject = $('input#Subject').val();
    var message = $('textarea#Message').val();
    $.ajax({
        type: 'post',
        url: '/home/contact',
        data: JSON.stringify({ name: name, email: email, subject: subject, message: message }),
        contentType: "application/json; charset=utf-8", 
        dataType: "json",
        cache: false,
        success: function(result) {
            //do stuff
        },
        error: function(result) {                                   
            //do stuff
        }               
    })

    return false;
}