Change image source with JavaScript

后端未结

关注

 13  1810

So I\'m new with JavaScript (this is actually my first attempt to make something work) and I\'m having a bit of trouble. I thought I had enough knowledge to make this work,

相关标签:

13条回答

暖寄归人

2020-11-27 18:51
I know this question is old, but for the one's what are new, here is what you can do:

HTML
```
<img id="demo" src="myImage.png">

<button onclick="myFunction()">Click Me!</button>
```
JAVASCRIPT
```
function myFunction() {
document.getElementById('demo').src = "myImage.png";
}
```
0 讨论(0)
发布评论:

提交评论
- 加载中...

遥遥无期

2020-11-27 18:54

Try this!

function changeimage() {
    var image = document.getElementById('imagem');
    if (image.src.match("img")) {
        for(i = 1; i <= 3; i++) {
            image.src = "img/image2"+i+".png";
        }
    } else {
        image.src = "img/image1.png";
    }
}

0 讨论(0)

野性不改

2020-11-27 18:56

function changeImage(a) so there is no such thing as a.src => just use a.

demo here

0 讨论(0)
发布评论:

提交评论
- 加载中...

眼角桃花

2020-11-27 18:56

Hi i tried to integrate with your code.

Can you have a look at this?

Thanks M.S

<!DOCTYPE html>
<html>
<head>

<!--TODO: need to integrate this code into the project to change images added 05/21/2016:-->

<script type="text/javascript">
    function changeImage(a) {
        document.getElementById("img").src=a;
    }
</script>


	
<title> Fluid Selection </title>
<!-- css -->
	<link rel="stylesheet" href="bootstrap-3/css/bootstrap.min.css">
	<link rel="stylesheet" href="css/main.css">
<!-- end css -->
<!-- Java script files -->
<!-- Date.js date os javascript helper -->
    <script src="js/date.js"> </script>

<!-- jQuery (necessary for Bootstrap's JavaScript plugins) -->
	<script src="js/jquery-2.1.1.min.js"></script>

<!-- Include all compiled plugins (below), or include individual files as needed -->
	<script src="bootstrap-3/js/bootstrap.min.js"> </script>
	<script src="js/library.js"> </script>
	<script src="js/sfds.js"> </script>
	<script src="js/main.js"> </script>

<!-- End Java script files -->

<!--added on 05/28/2016-->

<style>
/* The Modal (background) */
.modal {
    display: none; /* Hidden by default */
    position: fixed; /* Stay in place */
    z-index:40001; /* High z-index to ensure it appears above all content */ 
    padding-top: 100px; /* Location of the box */
    left: 0;
    top: 0;
    width: 100%; /* Full width */
    height: 100%; /* Full height */
    overflow: auto; /* Enable scroll if needed */
   
    background-color: rgba(0,0,0,0.9); /* Black w/ opacity */
}

/* Modal Content */
.modal-content {
    position: relative;
    background-color: #fefefe;
    margin: auto;
    padding: 0;
    border: 1px solid #888;
    width: 40%;
    box-shadow: 0 4px 8px 0 rgba(0,0,0,0.2),0 6px 20px 0 rgba(0,0,0,0.19);
    -webkit-animation-name: animatetop;
    -webkit-animation-duration: 0.4s;
    animation-name: animatetop;
    animation-duration: 0.4s
	opacity:.5; /* Sets opacity so it's partly transparent */ -ms-filter:"progid:DXImageTransform.Microsoft.Alpha(Opacity=50)"; 
	/* IE 				
	transparency */ filter:alpha(opacity=50); /* More IE transparency */ z-index:40001; } 
}

/* Add Animation */
@-webkit-keyframes animatetop {
    from {top:-300px; opacity:0} 
    to {top:0; opacity:1}
}

@keyframes animatetop {
    from {top:-300px; opacity:0}
    to {top:0; opacity:1}
}

/* The Close Button */
.close {
    
}

.close:hover,
.close:focus {
    color: #000;
    text-decoration: none;
    cursor:pointer;
}

/* The Close Button */
.close2 {
    
}


.close2:focus {
    color: #000;
    text-decoration: none;
    cursor:pointer;
}

.modal-header {
	color: #000;
    padding: 2px 16px;
 }

.modal-body {padding: 2px 16px;}
	
	
}

.modal-footer {
    padding: 2px 16px;
    background-color: #000099;
    color: white;
}


</style>

<script>
	$(document).ready(function() {
	
	
		$("#water").click(function(event){
			var $this= $(this);
			if($this.hasClass('clicked')){
				$this.removeClass('clicked');
				SFDS.setFluidType(0);
				$this.find('h3').text('Select the H20 Fluid Type');
				}else{
					SFDS.setFluidType(1);
					$this.addClass('clicked');
					$this.find('h3').text('H20 Selected');

			}
		});
		
		$("#saline").click(function(event){
			var $this= $(this);
			if($this.hasClass('clicked')){
				$this.removeClass('clicked');
				SFDS.setFluidType(0);
				$this.find('h3').text('Select the NaCL Fluid Type');
				}else{
					SFDS.setFluidType(1);
					$this.addClass('clicked');
					$this.find('h3').text('NaCL Selected');
					
		
		
			}
		});
		
	});
</script>
</head>
<body>
<div class="container-fluid">
	<header>
		<div class="row">
			<div class="col-xs-6">
				<div id="date"><span class="date_time"></span></div>
			</div>
			<div class="col-xs-6">
				<div id="time" class="text-right"><span class="date_time"></span></div>
			</div>
		</div>
	</header>

	<div class="row">
		<div class="col-md-offset-1 col-sm-3 col-xs-8 col-xs-offset-2 col-sm-offset-0">
			<div id="fluid" class="main_button center-block">
				<div class="large_circle_button, main_img"> 
					<h2>Select<br>Fluid</h2>
					<img class="center-block large_button_image" src="images/dropwater.png" alt=""/> 
				</div>
				<h1></h1>
			</div>
		</div>
		<div class=" col-md-6 col-sm-offset-1 col-sm-8 col-xs-12">
			<div class="row">
				<div class="col-xs-12">
					<div id="water" class="large_rectangle_button">
						<div class="label_wrapper">
							<h3>Sterile<br>Water</h3>
						</div>
						<div id="thumb_img" class="image_wrapper">
							<img src="images/dropsterilewater.png" alt="Sterile Water" class="sterile_water_image" onclick='changeImage("images/dropsterilewater.png");'>
						</div>
						<img src="images/checkmark.png" class="button_checkmark" width="96" height="88">
					</div>
				</div>
				<div class="col-xs-12">
					<div id="saline" class="large_rectangle_button">
						<div class="label_wrapper">
							<h3>Sterile<br>0.9% NaCL</h3>
						</div>
						<div class="image_wrapper">
							<img src="images/cansterilesaline.png" alt= "Sterile Saline" class="sterile_salt_image" onclick='changeImage("images/imagecansterilesaline.png");'>
						</div>
						<img src="images/checkmark.png" class="button_checkmark" width="96" height="88">

					</div>
				</div>
				<div class="col-xs-12">
					<div class="small_rectangle_button">
						
						<!-- Trigger/Open The Modal -->
						<div id="myBtn" class="label_wrapper">
							<h3>Change<br>Cartridge</h3>
						</div>
						<div class="image_wrapper">
							<img src="images/changecartridge.png" alt="" class="change_cartrige_image" />
						</div>
					</div>
				</div>
				
					<!-- The Modal -->
					<div id="myModal" class="modal">

					  <!-- Modal content -->
					  <div class="modal-content">
						<div class="modal-header">
						  <span class="close"><img src="images/x-icon.png"></span>
						  <h2>Change Cartridge Instructions</h2>
						</div>
						<div class="modal-body">
						  <h4>Lorem ipsum dolor sit amet, dicant nonumes volutpat cu eum, in nulla molestie vim, nec probo option iracundia ut. Tale inermis scripserit ne cum, his no errem minimum commune, usu accumsan omnesque in. Eu has nihil dolor debitis, ad nobis impedit per. Dicat mnesarchum quo at, debet abhorreant consectetuer sea te, postea adversarium et eos. At alii dicit his, liber tantas suscipit sea in, id pri erat probatus. Vel nostro periculis dissentiet te, ut ubique noster vix. Id honestatis disputationi vel, ne vix assum constituam.</h4>                                                   
                           <a href="#"><img src="images/video-icon.png" alt="click here for video">	</a>
                           <a href="#close2" title="Close" class="close2"><img src="images/cancel-icon.png" alt="Cancel"></a>

                          
						</div>
						<div class="modal-footer">
						  <h4></h4>
						</div>
					  </div>

					</div>
					
					<!--for comparison-->


					

					
					<script>
					// Get the modal
					var modal = document.getElementById('myModal');

					// Get the button that opens the modal
					var btn = document.getElementById("myBtn");

					// Get the <span> element that closes the modal
					var span = document.getElementsByClassName("close")[0];
					

					// When the user clicks the button, open the modal 
					btn.onclick = function() {
						modal.style.display = "block";
					}

					// When the user clicks on <span> (x), close the modal
					span.onclick = function() {
						modal.style.display = "none";
					}

					// When the user clicks anywhere outside of the modal, close it
					window.onclick = function(event) {
						if (event.target == modal) {
							modal.style.display = "none";
						}
						
						
					}
					</script>
                    

				
				
				
				
				
			</div>
		</div>
	</div>
</div>
<footer class="footer navbar-fixed-bottom">
	<div class="container-fluid">
		<div class="row cols-bottom">
			<div class="col-sm-3">
				<a href="main.html">
				<div class="small_circle_button">					
					<img src="images/buttonback.png" alt="back to home" class="settings"/> <!--  width="49" height="48" -->
				</div>
			</div></a><div class=" col-sm-6">
				<div id="stop_button" >
					<img src="images/stop.png" alt="stop" class="center-block stop_button" /> <!-- width="140" height="128" -->
				</div>
					
			</div><div class="col-sm-3">
				<div id="parker" class="pull-right">
					<img src="images/parkerlogo.png" alt="parkerlogo" /> <!-- width="131" height="65" -->
				</div>
			</div>
		</div>
	</div>
</footer>


</body>
</html>

0 讨论(0)

情书的邮戳

2020-11-27 18:57

 <script type="text/javascript">
        function changeImage(a) {
    var picName=a.substring(1,a.length-1);
            document.getElementById("image").src=picName;
        }
 </script>

 <div id="main_img">
     <img id="image" src="app.jpg">
 </div>

 <div id="thumb_img">
     <img src='app.jpg'  onclick="changeImage('+5steps.jpg+');">
     <img src='5steps.jpg'  onclick="changeImage('+award.png+');">
     <img src='award.png'  onclick="changeImage('+app.jpg+');">
 </div>

Use the above code by placing this html file and pics(take care in namings, beacause I have given the above code with my pic names) in same folder you will get...

0 讨论(0)

一向

2020-11-27 18:58

The problem was that you were using .src without needing it and you also needed to differentiate which img you wanted to change.

function changeImage(a, imgid) {
    document.getElementById(imgid).src=a;
}

<div id="main_img">
    <img id="img" src="1772031_29_b.jpg">
</div>
<div id="thumb_img">
    <img id="1" src='1772031_29_t.jpg'  onclick='changeImage("1772031_29_b.jpg", "1");'>
    <img id="2" src='1772031_55_t.jpg'  onclick='changeImage("1772031_55_b.jpg", "2");'>
    <img id="3" src='1772031_53_t.jpg'  onclick='changeImage("1772031_53_b.jpg", "3");'>
</div>

0 讨论(0)

1 2 3 下一页