问题描述
我已经提交了自己的验证码来在提交信息之前检查模式和字段。不再需要提交所需的复选框（例如，注册表单上的条款接受复选框）。如果您不选中条款接受框，则可以提交并显示错误。但是，表单验证应该失败并且不应提交表单。则该复选框应以必需的方式显示，以可视方式指示是否存在错误（即红色边框）（如果需要且未选中）。
#standardSQL
SELECT
COUNT(event_name) AS total_events,COUNTIF(event_name = 'visited x page') AS goal
FROM `project.dataset.table`
上面的代码是我遇到的表单，表单提交（带有Enter或单击提交时）而没有检查复选框是否被选中
<article id="clients_add">
<form method="POST" action="/client/invite">
<input type="tel" name="phone" placeholder="Phone Number" pattern="^[0-9\-\+\s\(\)]*$" required="required" />
<input type="text" name="email" placeholder="E-mail Address" pattern="^[^@]+@[^@]+\.[^@]+$" required="required" />
<input type="checkbox" required="required" id="contactclient" name="contactclient" value="1" />
<label for="contactclient">
<span><strong>✔</strong></span>
Client agreed to be contacted.
</label>
<input type="submit" value="Invite" />
</form>
</article>
//功能扩展
(function ($) { // grabs a HTML element
// $.validator (target) - makes it possible to not show the error when a required field is empty until the form is submitted
$.validator = function (target) {
// if any key is pressed,released or it has lost focus then:
$(document).on ("keydown keyup blur",target,function (event) {
if (!$(this).is ("textarea")) { // if this is NOT textArea element
let code = event.keyCode || event.which; // check which was pressed
if(code === 13) { // if ENTER key was pressed then:
event.preventDefault (); // DOES NOT TRIGGER Default action
event.stopPropagation (); // prevent any other handler from being notified
if (event.type === 'keyup') { // once the key is released(if there is a released key)
$(this).closest ("form").trigger ("submit");// travel to the closest form and execute submit
}
return false; //return this to validator.js
}
}
let valid = true; // assume it is valid (textarea element at this point)
if ($(this).val ().length > 0) // if the value entered has more than 0 characters
$(this).attr ("data-empty",null); // change data-empty attribue to null (since it has more than 0 characters)
//if the element IS required(set) and the data-empty attribute IS NOT DEFINED
if (typeof $(this).attr ('required') != 'undefined' && typeof $(this).attr ('data-empty') == 'undefined') {
if ($(this).val ().length === 0) { // and if there is NOTHING written down
valid = false; // is NOT Valid
}
}
// As long as the element specifies ANY kind of pattern then:
if (typeof $(this).attr ('pattern') != 'undefined') {
//IF the pattern we are looking for of the element is NOT found and the data empty attribute of the element is NOT defined
if ($(this).val ().search (new RegExp ($(this).attr ("pattern"))) === -1 && typeof $(this).attr ('data-empty') == 'undefined') {
valid = false; //is NOT valid
}
}
if (valid) { // if it is still valid after all the hurdles then:
$(this).siblings ("span.error").removeAttr ('style'); // all the siblings prone to "span.error" remove the style attribute
$(this).removeClass ("invalid"); // remove invalid class of the element
} else {
$(this).siblings ("span.error").css ('visibility','visible'); //make all the siblings span.error css visible
$(this).addClass ("invalid"); // add invalid class to element
}
});
// if an element receives a click,or a value of an element has been changed from input types:radio and checkbox
$(document).on ("click","form input[type='checkbox'],form input[type='radio']",function (event) { //event parameter for what?????
if ($(this).attr("checked") && $(this).attr ("type") === "checkbox") { //if this IS a checkbox input type and it is checked
$(this).attr ("checked",null); // change the value to null ( same as .removeAttr())
$(this).addClass ("unchecked"); // add unchecked class to the element
$(this).removeClass ("checked"); // remove checked class from the element
$(this).removeClass ("invalid"); //remove invalid class from the element
}
else {
if ($(this).attr ("type") === "radio") { // if it is a radio type input
$("input[name='" + $(this).attr ("name") + "']").attr ("checked",null);
$("input[name='" + $(this).attr ("name") + "']").addClass ("unchecked");
$("input[name='" + $(this).attr ("name") + "']").removeClass ("checked");
$("input[name='" + $(this).attr ("name") + "']").removeClass ("invalid");
}
$(this).attr ("checked","checked"); //either way check change the checked attribute to checked ????
$(this).addClass ("checked"); // add checked class to either element
$(this).removeClass ("unchecked"); // remove unchecked class from the element
$(this).removeClass ("invalid"); // remove invalid class from the element
}
return false; //return false to validator.js
});
// if an element is clicked or a key is pressed or released
$(document).on ("keydown keyup click","form label[for]",function (event) {
let code = event.keyCode || event.which; //listen to the type of key pressed
// if the event is a click and the targeted event is "a" OR the key pressed is SPACE KEY
if ((event.type === "click" && !($(event.target).is("a"))) || (event.type === "keydown" && code === 32)) {
$("input[id='" + $(this).attr ("for") + "']").click ();
return false;
//IF the key pressed is enter
} else if (event.type === "keyup" && code === 13) {
$(this).closest ("form").trigger ("submit");
return false; // Return false to validator js
}
return true; // validation success
});
//when the element is being pressed with the pointing device on a input submit button
$(document).on ("mousedown","input[type='submit']",function (event) {
event.preventDefault (); //cancels default event
event.stopPropagation (); // stops bubbling up to parent elements or capturing down to child elements
$(this).closest ("form").trigger ("submit"); // trigger submit on the form
return false; //return false to validator. js
});
// Whenever a FORM is submitted
$(document).on ("submit","form",function (event) {
// lets grab the form
let form = $(this); //jquery this = element (form)
form.attr ("data-valid","false"); // SET the data-valid attribute to false
form.find ("[data-empty]").each (function () { // find any elements where the data-empty attribute exist' and for each of them:
$(this).attr ('data-empty',null); // set the attribute (data-empty) to null
})
let valid = true; // let's assume it is valid
console.log (new Date().getTime () + ' formValidation start'); // start of the debug session
console.log (new Date().getTime () + ' formValidation checking disabled'); //
// If the disabled attribute of the element(input[type='submit']) in the form is defined OR the disabled attribute of the input[type='submit'] in the form is false
if (!(typeof form.find ("input[type='submit']").attr ("disabled") == 'undefined' || form.find ("input[type='submit']").attr ("disabled") === 'false')) {
console.log (new Date().getTime () + ' formValidation submit disabled'); // REPORT THAT THE FORM VALIDATION IS DISABLED
valid = false; //return false to the validator
}
console.log (new Date().getTime () + ' formValidation checking required'); // report that the formValidation checking is required
form.find ("*[required]").each (function () { // for each required element in the form
console.log (new Date().getTime () + ' formValidation required ' + $(this).attr ("name")); // OUTPUT that formvalidation is required for: "name"
//if the required attribute of the element is NOT FALSE (IN FACT A REQUIRED ELEMENT)
if ($(this).attr ("required") !== 'false') {
//and If the type attribute is RADIO
if ($(this).attr ("type") === "radio") {
//and if the
if ($("input[name='" + $(this).attr ("name") + "'].checked,input[name='" + $(this).attr ("name") + "']:checked").length === 0) {
valid = false;
console.log (new Date().getTime () + ' formValidation required fail');
$(this).siblings ("span.error").css ('visibility','visible');
$(this).addClass ("invalid");
}
//else if the type attribute is a checkbox
} else if ($(this).attr ("type") === "checkbox") {
// and if the element has a class called "checked" and the element is actually checked
if (!$(this).hasClass ("checked") && !$(this).is(":checked")) {
valid = false; // validation is false
console.log (new Date().getTime () + ' formValidation required fail'); //report validation
$(this).siblings ("span.error").css ('visibility','visible');// get the siblings that can "span.error" and make the visibility visible
$(this).addClass ("invalid"); // also add invalid class to the element
}
//else if the element value(textarea perhaps,input) is EXACTLY 0
} else if ($(this).val ().length === 0) {
valid = false; // make it INVALID
console.log (new Date().getTime () + ' formValidation required fail'); // Output validation
$(this).siblings ("span.error").css ('visibility','visible'); // for all the siblings elements that share span.error selector make the span error visible
$(this).addClass ("invalid"); //also add the invalid class
}
}
});
//
console.log (new Date().getTime () + ' formValidation checking pattern');// Output checking pattern
form.find ("*[pattern]").each (function () { // for each element with a pattern attribute
console.log (new Date().getTime () + ' formValidation pattern ' + $(this).attr ("name") + ' ' + $(this).attr ("pattern"));//output the pattern and the name
//if this element does not comply with pattern attribute (previously established)
if ($(this).val ().search (new RegExp ($(this).attr ("pattern"))) === -1) { //
valid = false; // then is not Valid
console.log (new Date().getTime () + ' formValidation pattern fail'); // output validation issue
$(this).siblings ("span.error").css ('visibility','visible'); // make all span error siblings (selector) visible
$(this).addClass ("invalid"); // add invalid class
}
});
//ASSUMING IT IS VALID
if (valid) {
form.attr ("data-valid","true"); // set the data-valid attribute to true
form.find ("input[type='submit']").attr ("disabled","disabled"); // find in the form with the selector (input[type='submit']) where the disabled attribute set to disabled
form.find ("input[type='checkbox']").each (function () { // find the input checkboxes in the form and for each
//if the element has a class called checked
if ($(this).hasClass ("checked")) {
//nothing because it is checked
}
else if ($(this).hasClass ("unchecked")) { // if the element has a class called uncheked
$(this).attr ('value',''); // set the value to ''
}
else if ($(this).is (":checked")) { // if this is :checked then:
//nothing because it is checked
}
//for everything else make the value empty
else {
$(this).attr ('value','');
}
$(this).attr ('type','hidden'); // set the element attribute type to hiddent
});
form.find ("input[type='radio']").each (function () { // for each input that type is radio do the following
//check if the radio input has a checked class OR
if ($(this).hasClass ("checked") || ($("input[name='" + $(this).attr ("name") + "'].checked").length === 0 && $(this).is (":checked"))) {
$(this).attr ("type","hidden"); // set the type value of the radio input to hiddent
return false; //return false
}
});
// look for the button of type radio and remove it
form.find ("input[type='radio']").remove ();
href = window.location.href;
window.location.hash = 'coming';
window.history.replaceState (form.serializeArray (),document.title,href);
} else {
event.preventDefault ();
event.stopPropagation ();
}
return valid;
});
}
}）（jQuery）;
上面的代码是我所做的验证。我评论了一些内容，以使其更易于阅读和理解其背后的逻辑
解决方法
暂无找到可以解决该程序问题的有效方法，小编努力寻找整理中！
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