try: image slide

by cactus77kiki

HTML

<!--photo slide show-->
<div class="slideshow-container" >
  <div id='picsbox'></div>
  <a class="prev" onclick="plusSlides(-1)">&#10094;</a>
  <a class="next" onclick="plusSlides(1)">&#10095;</a>
</div>
<br>

<div style="text-align:center" id='dotbox'>
</div>

<script>
//pics array
var pics =['https://lh3.googleusercontent.com/-Nois1GVlY2s/WMv2x75DzGI/AAAAAAAAU4A/0YOob_mc8XAJTwCq8N22ONOEa61uyXpsQCHM/s800/DSC_7515aa.jpg','https://lh3.googleusercontent.com/-s8E_oAD6SM4/WHWWQbfbcOI/AAAAAAAARw4/J3mDR2PH26wZPhQayPthlYXJ29NqRDPQQCHM/s800/DSC_7233aa.jpg','https://lh3.googleusercontent.com/-n6PvA274RjE/WHWWj8T-SbI/AAAAAAAARyA/pfok_bxw04AcyGrcL-LQ0-JLm73uBnuiwCHM/s800/DSC_7282aa.jpg','https://lh3.googleusercontent.com/-Dvkq3YLYzDc/WHSMjdbif2I/AAAAAAAARo4/OjONdoSA154FLbJTmnG8Ltjl1DUoxzWAwCHM/s800/DSC_6848aa.jpg','https://lh3.googleusercontent.com/-dOtQxQadCMw/WHSNDdQDN8I/AAAAAAAARp0/DEn_UqcisQQEoR32QA-feMxo71de2vRtgCHM/s800/DSC_6909aa.jpg'];
var picslen = pics.length;

//generate html code
var divParent = document.getElementById('picsbox');
var divDot = document.getElementById('dotbox');
for(i=0;i<picslen;i++){
  //new item 1
  var iDiv1 = document.createElement('div');
  iDiv1.className='mySlides fade';
  divParent.appendChild(iDiv1);
  //new item 2
  var iDiv2 = document.createElement('div');
  iDiv2.className='numbertext';
  iDiv2.innerHTML = (i+1).toString() +"/"+picslen.toString();
  
  //add image
  var iPic = document.createElement('img');
  iPic.src = pics[i];
  iPic.setAttribute('width', '100%');
  
  iDiv1.appendChild(iDiv2);
  iDiv1.appendChild(iPic);
  
  //add dot( bind click event)
  var iDot = document.createElement('span');
  iDot.className = 'dot';
  iDot.setAttribute('dot-index',i+1);
  /*iDot.onclick = function(){
    currentSlide();
  };*/
  divDot.appendChild(iDot);
}

//from w3c school example
var slideIndex = 1;
showSlides(slideIndex);

function plusSlides(n) {
  showSlides(slideIndex += n);
}

/*function currentSlide(n) {
  //需抓取現下pic index動態處理帶入n
...

CSS

* {box-sizing:border-box}
body {font-family: Verdana,sans-serif;margin:0}
.mySlides {display:none}

/* 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;
}

/* 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);
}

/* Caption text */
.text {
  color: #f2f2f2;
  font-size: 15px;
  padding: 8px 12px;
  position: absolute;
  bottom: 8px;
  width: 100%;
  text-align: center;
}

/* 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: 13px;
  width: 13px;
  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}
}