显示一个i帧,使用普通JavaScript隐藏另一个i帧
如果用户已经选择了一个视频(使用下拉菜单),并且他们选择了另一个,我希望第一个视频被新视频替换。相反,我现在是如何设置的,它只是在第一个视频之后附加第二个视频(甚至第三个,如果选择了第三个视频)。在加载新视频之前,如何更改代码以清除页面中的任何当前视频显示一个i帧,使用普通JavaScript隐藏另一个i帧,javascript,html,if-statement,Javascript,Html,If Statement,如果用户已经选择了一个视频(使用下拉菜单),并且他们选择了另一个,我希望第一个视频被新视频替换。相反,我现在是如何设置的,它只是在第一个视频之后附加第二个视频(甚至第三个,如果选择了第三个视频)。在加载新视频之前,如何更改代码以清除页面中的任何当前视频 <body> <h1>Let's Meditate.</h1> <select id="timer"> <option value="select
<body>
<h1>Let's Meditate.</h1>
<select id="timer">
<option value="select" disabled selected>Select One...</option>
<option value="twenty">20 minutes</option>
<option value="fifteen">15 minutes</option>
<option value="ten">10 minutes</option>
<option value="five">5 minutes</option>
</select>
<button type="button" onclick="meditate();">Go!</button>
<button onclick="refresh();">Refresh</button>
<div class="videos">
<iframe id="twentyMinVid" width="560" height="315" src="https://www.youtube.com/embed/VjxGjDo1tWA" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
<iframe id="fifteenMinVid" width="560" height="315" src="https://www.youtube.com/embed/aIIEI33EUqI" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
<iframe id="tenMinVid" width="560" height="315" src="https://www.youtube.com/embed/Xl_B45DpMLU" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
<iframe id="fiveMinVid" width="560" height="315" src="https://www.youtube.com/embed/3RxXiFgkxGc" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
</div>
<script>
function meditate() {
var timer = document.getElementById("timer").value;
if(timer == "twenty") {
document.getElementById("twentyMinVid").style.display = "block";
} else if(timer == "fifteen") {
document.getElementById("fifteenMinVid").style.display = "block";
} else if(timer == "ten") {
document.getElementById("tenMinVid").style.display = "block";
} else if(timer == "five") {
document.getElementById("fiveMinVid").style.display = "block";
} else {
document.querySelector(".videos").innerHTML = "Please select a time limit and click Go."
}
}
function refresh() {
location.reload();
}
</script>
</body>
让我们冥想吧。
选择一个。。。
20分钟
15分钟
10分钟
5分钟
走!
刷新
函数冥想(){
var timer=document.getElementById(“timer”).value;
如果(计时器=“二十”){
document.getElementById(“twentyMinVid”).style.display=“block”;
}否则,如果(计时器=“十五”){
document.getElementById(“fifteenMinVid”).style.display=“block”;
}否则如果(计时器=“十”){
document.getElementById(“tenMinVid”).style.display=“block”;
}否则如果(计时器=“五”){
document.getElementById(“fiveMinVid”).style.display=“block”;
}否则{
document.querySelector(“.videos”).innerHTML=“请选择一个时间限制,然后单击Go。”
}
}
函数刷新(){
location.reload();
}
这是因为在显示新的iFrame时没有隐藏现有的iFrame
例如,在此块中:
if(timer == "twenty") {
document.getElementById("twentyMinVid").style.display = "block";
//Add code here for hiding the other divs
document.getElementById("fifteenMinVid").style.display = "none";
document.getElementById("tenMinVid").style.display = "none";
document.getElementById("fiveMinVid").style.display = "none";
}
....You need to do this same thing in other sections so that you are hiding other divs while you show the correct div.
尝试更改iframe src,而不是在那里显示:block
<body>
<h1>Let's Meditate.</h1>
<select id="timer">
<option value="select" disabled selected>Select One...</option>
<option value="twenty">20 minutes</option>
<option value="fifteen">15 minutes</option>
<option value="ten">10 minutes</option>
<option value="five">5 minutes</option>
</select>
<button type="button" onclick="meditate();">Go!</button>
<button onclick="refresh();">Refresh</button>
<div class="videos">
<iframe id="iframe" width="560" height="315" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
</div>
<script>
function meditate() {
var timer = document.getElementById("timer").value;
var iframe = document.getElementById("iframe");
if(timer == "twenty") {
iframe.src = "https://www.youtube.com/embed/VjxGjDo1tWA";
} else if(timer == "fifteen") {
iframe.src = "https://www.youtube.com/embed/aIIEI33EUqI";
} else if(timer == "ten") {
iframe.src = "https://www.youtube.com/embed/Xl_B45DpMLU";
} else if(timer == "five") {
iframe.src = "https://www.youtube.com/embed/3RxXiFgkxGc";
} else {
document.querySelector(".videos").innerHTML = "Please select a time limit and click Go."
}
}
function refresh() {
location.reload();
}
</script>
让我们冥想吧。
选择一个。。。
20分钟
15分钟
10分钟
5分钟
走!
刷新
函数冥想(){
var timer=document.getElementById(“timer”).value;
var iframe=document.getElementById(“iframe”);
如果(计时器=“二十”){
iframe.src=”https://www.youtube.com/embed/VjxGjDo1tWA";
}否则,如果(计时器=“十五”){
iframe.src=”https://www.youtube.com/embed/aIIEI33EUqI";
}否则如果(计时器=“十”){
iframe.src=”https://www.youtube.com/embed/Xl_B45DpMLU";
}否则如果(计时器=“五”){
iframe.src=”https://www.youtube.com/embed/3RxXiFgkxGc";
}否则{
document.querySelector(“.videos”).innerHTML=“请选择一个时间限制,然后单击Go。”
}
}
函数刷新(){
location.reload();
}
这是我的解决方案,我稍微修改了你的代码
<body>
<h1>Let's Meditate.</h1>
<select id="timer">
<option value="select" disabled selected>Select One...</option>
<option value="twentyMinVid">20 minutes</option>
<option value="fifteenMinVid">15 minutes</option>
<option value="tenMinVid">10 minutes</option>
<option value="fiveMinVid">5 minutes</option>
</select>
<button type="button" onclick="meditate();">Go!</button>
<button onclick="refresh();">Refresh</button>
<div class="videos">
<iframe id="twentyMinVid" width="560" height="315" src="https://www.youtube.com/embed/VjxGjDo1tWA" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
<iframe id="fifteenMinVid" width="560" height="315" src="https://www.youtube.com/embed/aIIEI33EUqI" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
<iframe id="tenMinVid" width="560" height="315" src="https://www.youtube.com/embed/Xl_B45DpMLU" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
<iframe id="fiveMinVid" width="560" height="315" src="https://www.youtube.com/embed/3RxXiFgkxGc" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
</div>
<script>
function meditate() {
var timer = document.getElementById("timer").value;
if (timer === 'select') {
alert("Please select a time limit and click Go.");
return;
}
var options = document.getElementById("timer").options;
for (var i = 1; i < options.length; i++) {
if (options[i].value === timer) {
document.getElementById(timer).style.display = "block";
} else {
document.getElementById(options[i].value).style.display = "none";
}
}
}
function refresh() {
location.reload();
}
</script>
</body>
让我们冥想吧。
选择一个。。。
20分钟
15分钟
10分钟
5分钟
走!
刷新
函数冥想(){
var timer=document.getElementById(“timer”).value;
如果(计时器=='选择'){
警报(“请选择一个时间限制并单击“开始”);
返回;
}
var options=document.getElementById(“计时器”).options;
对于(变量i=1;i
我试图使它更通用,这样,如果您在下拉列表中添加更多选项,然后如果下拉列表值与frameId相同,则不需要在显示/隐藏视频的逻辑中进行任何修改
链接到