Answers for "how to declare for loop in javascript"

220

javascript for loop

var colors=["red","blue","green"];
for (let i = 0; i < colors.length; i++) { 
  console.log(colors[i]);
}
Posted by: Guest on June-17-2019
1

loop javascript

<body>

<h2>Automatic Slideshow</h2>
<p>Change image every 5 seconds:</p>


<div class="slideshow-container">
  <div class="mySlides fade">
    <img src="img_nature_wide.jpg" style="width:100%">
  </div>

  <div class="mySlides fade">
    <img src="img_snow_wide.jpg" style="width:100%">
  </div>

  <div class="mySlides fade">
    <img src="img_mountains_wide.jpg" style="width:100%">
  </div>
</div>

<br>



<div class="row">
    <div class="column">
      <img id="myBtn" class="demo cursor stop_loop" src="img_woods.jpg" style="width:100%" onclick="currentSlide(0); breakLoop();">
    </div>
    
    <div class="column">
      <img id="myBtn" class="demo cursor stop_loop" src="img_5terre.jpg" style="width:100%" onclick="currentSlide(1)">
    </div>
    
    <div class="column">
      <img id="myBtn" class="demo cursor stop_loop" src="img_mountains.jpg" style="width:100%" onclick="currentSlide(2)">
    </div>  
</div>





<script>
var slideIndex = 0; //indica che parto dall'immagine n.1
showSlides();


// script per lo slide delle immagini al click
function plusSlides(n) {
  showSlides(slideIndex += n);
}

function currentSlide(n) {
  showSlides(slideIndex = n);
}


// funzione per mostrare le slides
function showSlides() {
  var i;
  var slides = document.getElementsByClassName("mySlides");
  var dots = document.getElementsByClassName("demo");
  var exitLoop = 0;   //interrompere il loop al click delle immagini
  
  for (i = 0; i < slides.length; i++) {
    slides[i].style.display = "none";  
  }
  slideIndex++;
  
  if (slideIndex > slides.length) {slideIndex = 1}    
  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";
  
  

    enter code here

  if(exitLoop == 0) {
  	setTimeout(showSlides, 5000); // Change image every 5 seconds
  }

}
</script>

</body>
</html>
Posted by: Guest on September-12-2021

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