我一直试图隐藏错误消息onload，我希望它们在保存时显示。我在很多场景中都取得了成功，我可以相应地调整我的代码，但这似乎是一个连续的错误，我无法摆脱它。
我的功能：
function work() {
var self=this;
self.Time= ko.observable("");
self.Validation = ko.validatedObservable([
self.Time.extend({required:true}) ] );
self.calculate=ko.computed(function(){
return self.Time() * 2 ;
});
}
我在这一行self.mainArray.Validation.errors().length
根据我的观察，我清楚地调试了注意watch值增加的位置。
所以我尝试了很多方法来控制错误消息onLoad的显示，但它没有像init，onlyif一样在扩展等
init我试过保持showmessages:false单向工作，但点击保存按钮后我无法再显示消息
model.showerrormessages(false)什么都不做
工作解决方案：效果会受到影响
ko.utils.arrayForEach(self.mainArray(), function (service) {
if (service.Validation.errors().length > 0) {
service.Validation.errors.showAllMessages(false);
}
});
像这样我有很多循环内部循环结构我不能对所有事情做同样的事情我只需要一些很酷的东西，所以我可以隐藏onLoad上的消息。
我提供了我的观察，任何建议都非常方便，如果我能为您提供更多信息，请告诉我。
答案 0 :(得分：0)
这只会计算提交时的验证，并包括显示错误消息 - http://codepen.io/dmoojunk/pen/zxqYbb
Html -
<div class="container no-padding">
<div class="col-md-12 col-sm-12 col-xs-12">
<div class="col-md-4 col-sm-4 col-xs-12">
<div>
<div>
<p>Phone: <a href="tel:0123456789">0123456789</a></p>
<p>Email: <a href="mailto:a@b.com" target="_top">email@example.co.uk</a></p>
<pre data-bind="text: ko.toJSON($data, null, 2)"></pre>
</div>
</div>
</div>
<div class="col-md-8 col-sm-8 col-xs-12">
<div>
<div>
<form role="form">
<div class="row">
<div class="col-md-6">
<div class="form-group" data-bind="validationElement: firstName">
<label class="control-label" for="contact-name">First Name</label>
<input type="text" class="form-control" id="contact-name" placeholder="i.e Joe" data-bind="textInput: firstName"/>
<span class="help-block" data-bind="validationMessage: firstName"></span>
</div>
</div>
<div class="col-md-6">
<div class="form-group" data-bind="validationElement: email">
<label class="control-label" for="contact-email">Email</label>
<input type="email" class="form-control" id="contact-email" placeholder="i.e email@info.com" data-bind="textInput: email"/>
<span class="help-block" data-bind="validationMessage: email"></span>
</div>
</div>
</div>
<div class="row">
<div class="col-md-6">
<div class="form-group" data-bind="validationElement: surname">
<label class="control-label" for="contact-surname"> Surname</label>
<input type="text" class="form-control" id="contact-surname" placeholder="i.e Bloggs" data-bind="textInput: surname"/>
<span class="help-block" data-bind="validationMessage: surname"></span>
</div>
</div>
<div class="col-md-6">
<div class="form-group" data-bind="validationElement: category">
<label class="control-label" for="contact-topic">Please select a category</label>
<select class="form-control" id="contact-topic" data-bind="value: category">
<option value="">Select category</option>
<option value="general">General contact</option>
<option value="issue">Report an issue</option>
<option value="help">Help enquiry</option>
</select>
</div>
</div>
</div>
</div>
<div class="row">
<div class="col-md-12">
<div class="form-group" data-bind="validationElement: message">
<label class="control-label" for="contact-textarea">Write your message here, the more detail the better</label>
<textarea style="width:100%" id="contact-textarea" placeholder="Place message here" rows="10" data-bind="textInput:message"></textarea>
<span class="help-block" data-bind="validationMessage: message"></span>
</div>
<button type="button" class="btn btn-green" data-bind="click: submit">Get in touch</button>
</div>
</div>
</div>
</form>
</div>
</div>
</div>
和JS -
var mynamespace = mynamespace || {};
ko.validation.init({
errorElementClass: 'has-error',
errorMessageClass: 'help-block',
decorateElement: true,
insertMessages: false
});
//Viewmodel
mynamespace.ContactUsViewModel = function(){
var self = this;
self.validationEnabled = ko.observable(false);
self.isValidationEnabled = function() {
return self.validationEnabled();
}
self.firstName = ko.observable('').extend({
required: {
onlyIf: self.isValidationEnabled
},
minLength: {
onlyIf: self.isValidationEnabled,
params: 5
}
});
self.email = ko.observable('').extend({
required: {
onlyIf: self.isValidationEnabled
},
email: {
onlyIf: self.isValidationEnabled
}
});
self.surname = ko.observable('').extend({
required: {
onlyIf: self.isValidationEnabled
},
minLength: {
onlyIf: self.isValidationEnabled,
params: 5
}
});
self.category = ko.observable('').extend({
required: {
onlyIf: self.isValidationEnabled
},
minLength: {
onlyIf: self.isValidationEnabled,
params: 1
}
});
self.message = ko.observable('').extend({
required: {
onlyIf: self.isValidationEnabled
},
minLength: {
onlyIf: self.isValidationEnabled,
params: 5
}
});
self.submit = function() {
self.validationEnabled(true);
if (!this.isValid()) {
this.errors.showAllMessages();
} else {
alert('Form Valid');
};
}
};
var viewmodel = ko.validatedObservable(new mynamespace.ContactUsViewModel())();
ko.applyBindings(viewmodel);