如何添加時間函數然后單擊javascript中的按鈕
[英]How can I add a time function then click a button in javascript
問題描述
我正在為我的學校建立一個網站，我剛剛完成了一個幻燈片。 要在幻燈片上的圖片之間切換，用戶需要單擊前進或上一個按鈕。 我可以添加它們以使其每 5 秒自動前進到下一張幻燈片嗎？
我的代碼：
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<style>
* {box-sizing: border-box}
body {font-family: Verdana, sans-serif; margin:0}
.mySlides {display: none}
img {vertical-align: middle;}
/* Slideshow container */
.slideshow-container {
max-width: 1000px;
position: relative;
margin: auto;
}
/* Next & previous buttons */
.prev, .next {
cursor: pointer;
position: absolute;
top: 50%;
width: auto;
padding: 16px;
margin-top: -22px;
color: white;
font-weight: bold;
font-size: 18px;
transition: 0.6s ease;
border-radius: 0 3px 3px 0;
user-select: none;
}
/* Position the "next button" to the right */
.next {
right: 0;
border-radius: 3px 0 0 3px;
}
/* On hover, add a black background color with a little bit see-through */
.prev:hover, .next:hover {
background-color: rgba(0,0,0,0.8);
}
/* Number text (1/3 etc) */
.numbertext {
color: #f2f2f2;
font-size: 12px;
padding: 8px 12px;
position: absolute;
top: 0;
}
/* The dots/bullets/indicators */
.dot {
cursor: pointer;
height: 15px;
width: 15px;
margin: 0 2px;
background-color: #bbb;
border-radius: 50%;
display: inline-block;
transition: background-color 0.6s ease;
}
.active, .dot:hover {
background-color: #717171;
}
/* Fading animation */
.fade {
-webkit-animation-name: fade;
-webkit-animation-duration: 1.5s;
animation-name: fade;
animation-duration: 1.5s;
}
@-webkit-keyframes fade {
from {opacity: .4}
to {opacity: 1}
}
@keyframes fade {
from {opacity: .4}
to {opacity: 1}
}
/* On smaller screens, decrease text size */
@media only screen and (max-width: 300px) {
.prev, .next,.text {font-size: 11px}
}
</style>
</head>
<body>
<div class="slideshow-container">
<div class="mySlides fade">
<div class="numbertext">1 / 3</div>
<img src="img_nature_wide.jpg" style="width:100%">
</div>
<div class="mySlides fade">
<div class="numbertext">2 / 3</div>
<img src="img_snow_wide.jpg" style="width:100%">
</div>
<div class="mySlides fade">
<div class="numbertext">3 / 3</div>
<img src="img_mountains_wide.jpg" style="width:100%">
</div>
<a class="prev" onclick="plusSlides(-1)">❮</a>
<a class="next" onclick="plusSlides(1)">❯</a>
</div>
<br>
<div style="text-align:center">
<span class="dot" onclick="currentSlide(1)"></span>
<span class="dot" onclick="currentSlide(2)"></span>
<span class="dot" onclick="currentSlide(3)"></span>
</div>
<script>
var slideIndex = 1;
showSlides(slideIndex);
function plusSlides(n) {
showSlides(slideIndex += n);
}
function currentSlide(n) {
showSlides(slideIndex = n);
}
function showSlides(n) {
var i;
var slides = document.getElementsByClassName("mySlides");
var dots = document.getElementsByClassName("dot");
if (n > slides.length) {slideIndex = 1}
if (n < 1) {slideIndex = slides.length}
for (i = 0; i < slides.length; i++) {
slides[i].style.display = "none";
}
for (i = 0; i < dots.length; i++) {
dots[i].className = dots[i].className.replace(" active", "");
}
slides[slideIndex-1].style.display = "block";
dots[slideIndex-1].className += " active";
}
</script>
</body>
</html>
我只需要每 5 秒移到下一張幻燈片
3 個解決方案
解決方案1
0 2020-10-04 06:52:35
您可以使用setInterval每隔幾秒調用一次特定函數，在該函數中您可以將幻燈片移至下一頁。 就像是：
function myFunc() {
if (lastSlide) {
clearInterval(slideMoveInterval); // <- clean up
} else {
goToNextSlide();
}
}
let slideMoveInterval = setInterval(myFunc, 5000); // <- called every 5 seconds
我已經排除了函數，但您可以用您的函數替換偽代碼。
MDN 參考： https : //developer.mozilla.org/en-US/docs/Web/API/WindowOrWorkerGlobalScope/setInterval
解決方案2
0 2020-10-04 06:52:52
您可以使用 javascript API setInterval () 如下。 這將每 3 秒調用一次call_AnyFunction_Here函數。
setInterval(function(){ call_AnyFunction_Here() }, 3000);
用你的幻燈片導航功能代替這個功能
解決方案3
0 已采納 2020-10-04 08:02:00
您可以使用setInterval運行在給定timeinterval指定的函數。
var slideIndex = 1; var timeGap = 5000; // time gap in milliseconds showSlides(slideIndex); function plusSlides(n) { showSlides(slideIndex += n); } function currentSlide(n) { showSlides(slideIndex = n); } function showSlides(n) { var i; var slides = document.getElementsByClassName("mySlides"); var dots = document.getElementsByClassName("dot"); if (n > slides.length) { slideIndex = 1 } if (n < 1) { slideIndex = slides.length } for (i = 0; i < slides.length; i++) { slides[i].style.display = "none"; } for (i = 0; i < dots.length; i++) { dots[i].className = dots[i].className.replace(" active", ""); } slides[slideIndex - 1].style.display = "block"; dots[slideIndex - 1].className += " active"; } setInterval(function() { showSlides(slideIndex); slideIndex++ }, timeGap)
<!DOCTYPE html> <html> <head> <meta name="viewport" content="width=device-width, initial-scale=1"> <style> * { box-sizing: border-box } body { font-family: Verdana, sans-serif; margin: 0 } .mySlides { display: none } img { vertical-align: middle; } /* Slideshow container */ .slideshow-container { max-width: 1000px; position: relative; margin: auto; } /* Next & previous buttons */ .prev, .next { cursor: pointer; position: absolute; top: 50%; width: auto; padding: 16px; margin-top: -22px; color: white; font-weight: bold; font-size: 18px; transition: 0.6s ease; border-radius: 0 3px 3px 0; user-select: none; } /* Position the "next button" to the right */ .next { right: 0; border-radius: 3px 0 0 3px; } /* On hover, add a black background color with a little bit see-through */ .prev:hover, .next:hover { background-color: rgba(0, 0, 0, 0.8); } /* Number text (1/3 etc) */ .numbertext { color: #f2f2f2; font-size: 12px; padding: 8px 12px; position: absolute; top: 0; } /* The dots/bullets/indicators */ .dot { cursor: pointer; height: 15px; width: 15px; margin: 0 2px; background-color: #bbb; border-radius: 50%; display: inline-block; transition: background-color 0.6s ease; } .active, .dot:hover { background-color: #717171; } /* Fading animation */ .fade { -webkit-animation-name: fade; -webkit-animation-duration: 1.5s; animation-name: fade; animation-duration: 1.5s; } @-webkit-keyframes fade { from { opacity: .4 } to { opacity: 1 } } @keyframes fade { from { opacity: .4 } to { opacity: 1 } } /* On smaller screens, decrease text size */ @media only screen and (max-width: 300px) { .prev, .next, .text { font-size: 11px } } </style> </head> <body> <div class="slideshow-container"> <div class="mySlides fade"> <div class="numbertext">1 / 3</div> <img src="img_nature_wide.jpg" style="width:100%"> </div> <div class="mySlides fade"> <div class="numbertext">2 / 3</div> <img src="img_snow_wide.jpg" style="width:100%"> </div> <div class="mySlides fade"> <div class="numbertext">3 / 3</div> <img src="img_mountains_wide.jpg" style="width:100%"> </div> <a class="prev" onclick="plusSlides(-1)">❮</a> <a class="next" onclick="plusSlides(1)">❯</a> </div> <br> <div style="text-align:center"> <span class="dot" onclick="currentSlide(1)"></span> <span class="dot" onclick="currentSlide(2)"></span> <span class="dot" onclick="currentSlide(3)"></span> </div> </body> </html>
如何單擊按鈕並在webdriver中觸發javascript函數？
[英]How can I click on a button and trigger a javascript function in webdriver?
如何將功能添加到按鈕上，以便單擊和下一步單擊，應在javascript中將其禁用
[英]how can i add functioning to the button for one click and for next click it should be disabled in javascript
單擊提交按鈕后，如何一次綁定功能？ 對於jQuery Ajax形式
[英]how can i bind function one time once i click submit button? for jquery ajax form
如何使 JavaScript 按鈕點擊功能在時間限制后起作用？
[英]How to enabling JavaScript button click function to work after a time limit?
如何在使用javascript函數單擊按鈕時將選擇列表框中的多個值添加到另一個列表框中？
[英]How do I add multiple values from a select listbox to another listbox on click of a button using javascript function?
如何在60秒后將自動點擊功能添加到按鈕並使用javascript執行該操作？
[英]How can I add automatic click functionality after 60second to button and perform that operation using javascript?
聲明:本站的技術帖子網頁，遵循CC BY-SA 4.0協議，如果您需要轉載，請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.
相關問題
單擊按鈕后，如何將圖像添加到 Javascript？
如何單擊按鈕並在webdriver中觸發javascript函數？
如何將一次性點擊事件添加到函數中？
如何將功能添加到按鈕上，以便單擊和下一步單擊，應在javascript中將其禁用
如何通過單擊按鈕調用功能？
如何在使用JavaScript構建的按鈕上添加點擊事件？
單擊提交按鈕后，如何一次綁定功能？ 對於jQuery Ajax形式
如何使 JavaScript 按鈕點擊功能在時間限制后起作用？
如何在使用javascript函數單擊按鈕時將選擇列表框中的多個值添加到另一個列表框中？
如何在60秒后將自動點擊功能添加到按鈕並使用javascript執行該操作？
相關標簽