我有一个包含一些输入字段名称，电子邮件等的表格，我有一个视频（我无法在此处张贴），其中包含一个女孩在说，例如，电子邮件错误，请输入新的电子邮件，密码不正确输入正确的密码，使用名字，请输入新名称，等等，
所以我想当用户输入名称而不是显示的消息（例如好名）时，我想播放一段视频，说“哦，这是好名”，反之亦然，
这是jsfiddle供参考： validation message using video
这是我到目前为止所拥有的
<!--PEN CODE-->
<div id="contactForm" class="contactForm">
<div id="formHeader" class="formHeader">
<h1 id="message">Contact Me</h1>
</div>
<div id="formBody" class="formBody">
<form action="" method="POST" name="contactForm">
<div class="inputContainer">
<label for="userName">
<i class="fa fa-lg fa-fw fa-user"></i>
</label>
<input name="name" id="userName" type="text" placeholder="John Smith">
</div>
<div class="inputContainer">
<label for="userEmail">
<i class="fa fa-lg fa-fw fa-envelope"></i>
</label>
<input name="email" id="userEmail" type="email" placeholder="jsmith@domain.com">
</div>
<div class="inputContainer">
<textarea name="feedback" id="userMessage" rows="10" placeholder="Enter your message"></textarea>
</div>
<input id="submitBtn" class="submitBtn" type="submit" value="Send">
</form>
</div>
</div>
<center><p><em>NOTE: This form is for presentation only. Any form data entered is not submitted</em></p></center>
<!--END PEN CODE-->
<div class="video=wrapper">
<video id="video1" width="420">
<source src="https://www.w3schools.com/html/mov_bbb.mp4" type="video/mp4">
</video>
</div>
这是我到目前为止拥有的
(function() {
"use strict";
var //GLOBAL VARIABLES
input,
container,
//CSS CLASSES
classSuccess = "success",
classError = "error",
//FORM VALIDATOR
formValidator = {
init: function() {
this.cacheDom();
this.bindEvents();
},
cacheDom: function() {
//MAIN PARENT ELEMENT
this.contactForm = document.getElementById("contactForm");
//MAIN FORM ELEMENTS
this.formHeader = document.querySelector("#formHeader h1");
this.formBody = document.getElementById("formBody");
this.inputContainer = document.getElementsByClassName("inputContainer");
//USER INPUT ELEMENTS
//INPUT FIELDS
this.fields = {
userName: document.getElementById("userName"),
userEmail: document.getElementById("userEmail"),
userMessage: document.getElementById("userMessage")
};
this.submitBtn = document.getElementById("submitBtn");
},
bindEvents: function() {
var i;
//RUN RULES ON SUBMIT BUTTON CLICK
this.submitBtn.onclick = this.runRules.bind(this);
//BIND EVENTS TO EACH INPUT FIELD
for (i in this.fields) {
if (this.fields.hasOwnProperty(i)) {
//VARIABLES
input = this.fields[i];
container = input.parentElement;
//RUN RULES WHEN INPUT HAS FOCUS
input.onfocus = this.runRules.bind(this);
//RESET ERRORS WHEN CONTAINER IS CLICKED
container.onclick = this.resetErrors.bind(this, input);
}
}
},
runRules: function(evnt) {
var target = evnt.target,
type = evnt.type;
//IF EVENT ON SUBMIT BUTTON
if (target === this.submitBtn) {
//PREVENT FORM SUBMITTION
this.preventDefault(evnt);
//IF INPUT HAS FOCUS
} else if (type === "focus") {
//RESET CLASSLIST
this.resetClassList(target.parentElement);
//RESET ERRORS
this.resetErrors(target);
return false;
}
//RESET CLASSLIST
this.resetClassList();
//CHECK FIELDS
this.checkFields();
},
preventDefault: function(evnt) {
//PREVENT DEFUALT
evnt.preventDefault();
},
checkFields: function() {
var i,
validCount = 0,
//EMAIL FILTER
filter = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
//CYLCE THROUGH INPUTS
for (i in this.fields) {
if (this.fields.hasOwnProperty(i)) {
input = this.fields[i];
//CHECK IF FIELD IS EMPTY
if (input.value === "") {
//ADD ERROR CLASS
this.addClass(input, classError);
//CHECK IF EMAIL IS VALID
} else if (i === "userEmail" && !filter.test(input.value)) {
//ADD ERROR CLASS
this.addClass(input, classError);
} else {
//FIELD IS VALID
this.addClass(input, classSuccess);
validCount += 1;
}
}
}
//IF ALL FEILDS ARE VALID
if (validCount === 3) {
//SUBMIT FORM
this.submitForm();
}
},
addClass: function(input, clss) {
container = input.parentElement;
//IF INPUT HAS ERROR
if (clss === classError) {
//SHOW ERROR MESSAGE
this.errorMessage(input);
}
//ADD CLASS
input.parentElement.classList.add(clss);
},
errorMessage: function(input) {
var message;
//IF USERNAME HAS ERROR
if (input === this.fields.userName) {
//grab data from video and interact it with html5 form
var videoElement = document.getElementById('video1')[0];
videoElement.addEventListener('loadmetadata', function(){
this.currentTime =20;
}, false)
//ELSE IF USEREMAIL HAS ERROR
} else if (input === this.fields.userEmail) {
//grab data from video and interact it with html5 form
var videoElement = document.getElementById('video1')[0];
videoElement.addEventListener('loadmetadata', function(){
this.currentTime =70;
}, false)
//ELSE IF USERMESSAGE HAS ERROR
} else if (input === this.fields.userMessage) {
//grab data from video and interact it with html5 form
var videoElement = document.getElementById('video1')[0];
videoElement.addEventListener('loadmetadata', function(){
this.currentTime =50;
}, false)
}
this.renderError(input, message);
},
renderError: function(input, message) {
var html;
//GET INPUT CONTAINER
container = input.parentElement;
//RENDER HTML
html = document.createElement("div");
html.setAttribute("class", "message");
html.innerHTML = message;
//IF MESSAGE ELEMENT DOESN'T EXIST
if (!container.getElementsByClassName("message")[0]) {
//INSERT MESSAGE TO INPUT CONTAINER
container.insertBefore(html, container.firstElementChild);
}
},
resetClassList: function(input) {
var i;
//IF TARGETING SPECIFIC INPUT
if (input) {
//GET INPUT CONTAINER
container = input.parentElement;
//REMOVE CLASSES
container.classList.remove(classError, classSuccess);
//FOCUS ON INPUT FIELD
input.focus();
} else {
for (i in this.fields) {
if (this.fields.hasOwnProperty(i)) {
//REMOVE CLASSES FROM ALL FIELDS
this.fields[i].parentElement.classList.remove(classError, classSuccess);
}
}
}
},
resetErrors: function(input) {
//GET INPUT CONTAINER
container = input.parentElement;
//IF CONTAINER CONTAINS ERROR
if (container.classList.contains(classError)) {
//RESET CLASSES
this.resetClassList(input);
}
},
submitForm: function() {
var waitForAnimation;
//ADD SUCCESS CLASS
this.contactForm.classList.add(classSuccess);
//WAIT FOR ANIMATION TO FINISH
this.changeHeader("Sent Succesfully");
//WAIT FOR ANIMATION TO FINISH
setTimeout(this.changeHeader.bind(this, "Thank you for your feedback"), 1200);
},
changeHeader: function(text) {
//CHANGE HEADER TEXT
this.formHeader.innerHTML = text;
}
};
//INITIATE FORM VALIDATOR
formValidator.init();
}());
**
注意：您可以使用任何视频，重要的是有效的解决方案
**
不幸的是，这无法正常工作
我的代码在做什么错了？
答案 0 :(得分：1)
首先，您似乎正在将jQuery代码与本机JS混合在一起。您没有通过以下方式选择视频元素：
document.getElementById("video1")[0];
这需要这样做：
document.getElementById("video1");
接下来，您可以在可能触发或永远不会触发的元素上设置事件侦听器。让我们确保可以通过强制视频提取来触发事件处理程序。
您的样本中有很多事情要做，所以我将其分解为最小的部分。
canplay事件。
let vidElement = document.getElementById('video1');
vidElement.addEventListener('canplay', playVideo);
document.querySelector('button').addEventListener('click', loadvideo);
function loadvideo() {
vidElement.src = "https://www.w3schools.com/html/mov_bbb.mp4";
}
async function playVideo() {
vidElement.currentTime = 70;
console.log("Playing video from: ", vidElement.currentTime);
await vidElement.play().catch(e => console.log("error: ", e.message));
}<button>Make Form Error</button>
<br>
<video id="video1" width="420">
<source type="video/mp4">
</video>