我希望我的按钮在填写完字段后调用我的模式答案

【问题标题】：I want my button to call my modal once the fields filled我希望我的按钮在填写完字段后调用我的模式
【发布时间】：2020-06-11 19:52:23
【问题描述】：

我希望得到一些帮助，以找出仅在填写这些字段后才能更轻松地召唤我的模态：

<form action="" id="myForm">
                                <fieldset>
                                    <input type="hidden" name="action" value="contact_send" />

                                    <div class="row">
                                        <div class="col-md-4">
                                            <label for="contact:name">Full Name *</label>
                                            <input required type="text" value="" placeholder="Full name" class="form-control" name="fullname" id="contact:name">
                                        </div>
                                        <div class="col-md-4">
                                            <label for="contact:compagny">Compagny Name *</label>
                                            <input required type="text" value="" placeholder="Compagny Name" class="form-control" name="compagny" id="contact:compagny">
                                        </div>
                                        <div class="col-md-4">
                                            <label for="contact:email">Email</label>
                                            <input required type="email" value="" placeholder="email@email.com" class="form-control" name="email" pattern="[a-z0-9._%+-]+@[a-z0-9.-]+\.[a-z]{2,}$" id="contact:email">
                                        </div>
                                </div>
                                <div class="row">
                                        <div class="col-md-6">
                                            <label for="contact:phone">Phone *</label>
                                            <input type="tel" value="" class="form-control input-phone" placeholder="999 999-9999" name="phone" id="contact:phone" pattern="[0-9]{3} [0-9]{3}-[0-9]{4}" maxlength="12" onkeydown="return event.keyCode !== 69">
                                        </div>
                            </form>

这是我的按钮：

<!-- Button trigger modal -->
                                <div class="row">
                                    <div class="col-md-12">
                                        <button type="submit" class="btn btn-primary active" data-toggle="modal" data-target="#exampleModal"><i class="fa fa-check"></i> SEND MESSAGE</button>
                                    </div>
                                </div>

这是我的模态：

<!-- Modal -->
                                <div class="modal fade" id="exampleModal" tabindex="-1" role="dialog" aria-labelledby="exampleModalLabel" aria-hidden="true">
                                    <div class="modal-dialog" role="document">
                                    <div class="modal-content">
                                        <div class="modal-header">
                                        <h5 class="modal-title" id="exampleModalLabel">Modal title</h5>
                                        <button type="button" class="close" data-dismiss="modal" aria-label="Close">
                                            <span aria-hidden="true">&times;</span>
                                        </button>
                                        </div>
                                        <div class="modal-body">
                                        ...
                                        </div>
                                        <div class="modal-footer">
                                        <button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>
                                        </div>
                                    </div>
                                    </div>
                                     </div>

到目前为止，我的按钮触发了未填充字段的模式，我知道我需要一些 javascript 代码，作为一个没有任何经验的初学者，我很挣扎。

【问题讨论】：

标签： javascript html bootstrap-4

【解决方案1】：

您可以将blur 事件侦听器添加到表单中的每个input 元素和模态触发按钮，并循环遍历所有输入以显示模态（如果它们都具有非空值）。您还需要从模式触发按钮中删除 data-target 属性，并且仅以编程方式打开模式。一旦用户点击离开他们填写的最后一个输入，这将导致模式打开。

const form = document.querySelector("#myForm");
const inputs = [...form.querySelectorAll("input")];
const modalTrigger = document.querySelector("button[type=submit]");
inputs.forEach(input=>{
    input.addEventListener("blur", openModalIfAllFilled);
});
function openModalIfAllFilled(){
	const allFilled = inputs.every(a=>a.value.trim());
  if(allFilled){
    $('#exampleModal').modal('show');
  }
}
modalTrigger.addEventListener("click", openModalIfAllFilled);

<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css" integrity="sha384-Vkoo8x4CGsO3+Hhxv8T/Q5PaXtkKtu6ug5TOeNV6gBiFeWPGFN9MuhOf23Q9Ifjh" crossorigin="anonymous">
<script src="https://code.jquery.com/jquery-3.4.1.slim.min.js" integrity="sha384-J6qa4849blE2+poT4WnyKhv5vZF5SrPo0iEjwBvKU7imGFAV0wwj1yYfoRSJoZ+n" crossorigin="anonymous"></script>
<script src="https://cdn.jsdelivr.net/npm/popper.js@1.16.0/dist/umd/popper.min.js" integrity="sha384-Q6E9RHvbIyZFJoft+2mJbHaEWldlvI9IOYy5n3zV9zzTtmI3UksdQRVvoxMfooAo" crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/js/bootstrap.min.js" integrity="sha384-wfSDF2E50Y2D1uUdj0O3uMBJnjuUD4Ih7YwaYd1iqfktj0Uod8GCExl3Og8ifwB6" crossorigin="anonymous"></script>
<form action="" id="myForm">
                                <fieldset>
                                    <input type="hidden" name="action" value="contact_send" />

                                    <div class="row">
                                        <div class="col-md-4">
                                            <label for="contact:name">Full Name *</label>
                                            <input required type="text" value="" placeholder="Full name" class="form-control" name="fullname" id="contact:name">
                                        </div>
                                        <div class="col-md-4">
                                            <label for="contact:compagny">Compagny Name *</label>
                                            <input required type="text" value="" placeholder="Compagny Name" class="form-control" name="compagny" id="contact:compagny">
                                        </div>
                                        <div class="col-md-4">
                                            <label for="contact:email">Email</label>
                                            <input required type="email" value="" placeholder="email@email.com" class="form-control" name="email" pattern="[a-z0-9._%+-]+@[a-z0-9.-]+\.[a-z]{2,}$" id="contact:email">
                                        </div>
                                </div>
                                <div class="row">
                                        <div class="col-md-6">
                                            <label for="contact:phone">Phone *</label>
                                            <input type="tel" value="" class="form-control input-phone" placeholder="999 999-9999" name="phone" id="contact:phone" pattern="[0-9]{3} [0-9]{3}-[0-9]{4}" maxlength="12" onkeydown="return event.keyCode !== 69">
                                        </div>
                                        </div>
                                        </fieldset>
                            </form>
                            <!-- Button trigger modal -->
                                <div class="row">
                                    <div class="col-md-12">
                                        <button type="submit" class="btn btn-primary active"><i class="fa fa-check"></i> SEND MESSAGE</button>
                                    </div>
                                </div>
                                <!-- Modal -->
                                <div class="modal fade" id="exampleModal" tabindex="-1" role="dialog" aria-labelledby="exampleModalLabel" aria-hidden="true">
                                    <div class="modal-dialog" role="document">
                                    <div class="modal-content">
                                        <div class="modal-header">
                                        <h5 class="modal-title" id="exampleModalLabel">Modal title</h5>
                                        <button type="button" class="close" data-dismiss="modal" aria-label="Close">
                                            <span aria-hidden="true">&times;</span>
                                        </button>
                                        </div>
                                        <div class="modal-body">
                                        ...
                                        </div>
                                        <div class="modal-footer">
                                        <button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>
                                        </div>
                                    </div>
                                    </div>
                                     </div>

这也可以只用 jQuery 编写以获得更好的浏览器支持。

$("#myForm input").blur(openModalIfAllFilled);
$("button[type=submit]").click(openModalIfAllFilled);
function openModalIfAllFilled(){
	var notAllFilled = $('#myForm input').is(function(index, element){
  	return !element.value.trim();
  });
  if(!notAllFilled){
    $('#exampleModal').modal('show');
  }
}

<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css" integrity="sha384-Vkoo8x4CGsO3+Hhxv8T/Q5PaXtkKtu6ug5TOeNV6gBiFeWPGFN9MuhOf23Q9Ifjh" crossorigin="anonymous">
<script src="https://code.jquery.com/jquery-3.4.1.slim.min.js" integrity="sha384-J6qa4849blE2+poT4WnyKhv5vZF5SrPo0iEjwBvKU7imGFAV0wwj1yYfoRSJoZ+n" crossorigin="anonymous"></script>
<script src="https://cdn.jsdelivr.net/npm/popper.js@1.16.0/dist/umd/popper.min.js" integrity="sha384-Q6E9RHvbIyZFJoft+2mJbHaEWldlvI9IOYy5n3zV9zzTtmI3UksdQRVvoxMfooAo" crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/js/bootstrap.min.js" integrity="sha384-wfSDF2E50Y2D1uUdj0O3uMBJnjuUD4Ih7YwaYd1iqfktj0Uod8GCExl3Og8ifwB6" crossorigin="anonymous"></script>
<form action="" id="myForm">
                                <fieldset>
                                    <input type="hidden" name="action" value="contact_send" />

                                    <div class="row">
                                        <div class="col-md-4">
                                            <label for="contact:name">Full Name *</label>
                                            <input required type="text" value="" placeholder="Full name" class="form-control" name="fullname" id="contact:name">
                                        </div>
                                        <div class="col-md-4">
                                            <label for="contact:compagny">Compagny Name *</label>
                                            <input required type="text" value="" placeholder="Compagny Name" class="form-control" name="compagny" id="contact:compagny">
                                        </div>
                                        <div class="col-md-4">
                                            <label for="contact:email">Email</label>
                                            <input required type="email" value="" placeholder="email@email.com" class="form-control" name="email" pattern="[a-z0-9._%+-]+@[a-z0-9.-]+\.[a-z]{2,}$" id="contact:email">
                                        </div>
                                </div>
                                <div class="row">
                                        <div class="col-md-6">
                                            <label for="contact:phone">Phone *</label>
                                            <input type="tel" value="" class="form-control input-phone" placeholder="999 999-9999" name="phone" id="contact:phone" pattern="[0-9]{3} [0-9]{3}-[0-9]{4}" maxlength="12" onkeydown="return event.keyCode !== 69">
                                        </div>
                                        </div>
                                        </fieldset>
                            </form>
                            <!-- Button trigger modal -->
                                <div class="row">
                                    <div class="col-md-12">
                                        <button type="submit" class="btn btn-primary active"><i class="fa fa-check"></i> SEND MESSAGE</button>
                                    </div>
                                </div>
                                <!-- Modal -->
                                <div class="modal fade" id="exampleModal" tabindex="-1" role="dialog" aria-labelledby="exampleModalLabel" aria-hidden="true">
                                    <div class="modal-dialog" role="document">
                                    <div class="modal-content">
                                        <div class="modal-header">
                                        <h5 class="modal-title" id="exampleModalLabel">Modal title</h5>
                                        <button type="button" class="close" data-dismiss="modal" aria-label="Close">
                                            <span aria-hidden="true">&times;</span>
                                        </button>
                                        </div>
                                        <div class="modal-body">
                                        ...
                                        </div>
                                        <div class="modal-footer">
                                        <button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>
                                        </div>
                                    </div>
                                    </div>
                                     </div>

【讨论】：

感谢您的回答。我一定是做错了什么，因为......模态仍然出现......
@OlivierGodbout 你是什么意思？我的答案中的 sn-p 不起作用吗？
@OlivierGodbout 你能解释一下它的行为的哪一部分是不正确的吗？它对我来说很好。
例如当我运行 sn-p 时，我不填写任何字段，按发送消息并显示模式！
@OlivierGodbout 我已经编辑了我的答案。看看它现在是否适合你。