Databases
StackOverflow2013
Postsdbo
POmouseOver ImageReplace in canvas
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POmouseOver ImageReplace in canvas
    primarykey
    data
    text
    <p>I am trying to replace a image I have added to a canvas with a mouseOver event. I don't think I am doing this right.</p> <pre><code>&lt;script&gt; function loadImage(){ var canvas = document.getElementById("e"); var context = canvas.getContext("2d"); var cat = new Image(); cat.src = "images/paul01.jpg"; cat.onload = function() { context.drawImage(cat, 0, 0, 166, 276); }; } &lt;/script&gt; &lt;script&gt; function mouseOver(); { var canvas = document.getElementById("e"); var context = canvas.getContext("2d"); var cat = new Image(); cat.src = "images/paul02.jpg"; cat.onload = function() { context.drawImage(cat, 0, 0, 166, 276); }; } &lt;/script&gt; &lt;a href=""onmouseover="mouseOver"()&gt; &lt;div class="canvas"&gt; &lt;canvas id="e" width="166" height="276"&gt; &lt;p&gt;No Canvas Support in Browser, old fashion image?&lt;/p&gt; &lt;img src="images/paul01.jpg"&gt; &lt;/canvas&gt; &lt;/div&gt; &lt;/a&gt; </code></pre> <hr> <p>New Code: I am trying to change the image in canvas ID 'A' with mouse out on canvas 'e' I have been able to get the mousover to work and add a image to canvas 'A', but not remove it. </p> <pre><code> &lt;script&gt;         function init() {             setImageOne();         }         function setImageOne() { setImage('images/paul01.jpg'); }         &lt;!--function setImageTwo() { setImage('images/paul02.jpg'); }--&gt; function unsetImageOne() { largeImage('images/full/cartoonPaul02.jpg'); } function setImageTwo() { largeImage('images/full/cartoonPaul01.jpg'); }         function setImage(src) {             var canvas = document.getElementById("l");             var context = canvas.getContext("2d");             if (context == null) return;             var img = new Image();             img.src = src;             context.drawImage(img, 0, 0, 166, 276); } function largeImage(src){ var canvas = document.getElementById("A");             var context = canvas.getContext("2d");             if (context == null) return;             var img = new Image();             img.src = src;             context.drawImage(img, 0, 0, 300, 400); } &lt;/script&gt; &lt;div id="container"&gt; &lt;header&gt; &lt;a href='../../'&gt;&lt;h3&gt;Everything else&lt;/h3&gt;&lt;/a&gt; &lt;/header&gt; &lt;div id="main" role="main"&gt; &lt;body onload="init()"&gt; &lt;div class="canvas"&gt; &lt;canvas id="l" width="166" height="276" onmouseover="setImageTwo()" onmouseout="unsetImageOne()"&gt;&lt;/canvas&gt; &lt;/div&gt; &lt;div class="canvas"&gt; &lt;canvas id="A" width="300" height="400"&gt;&lt;/canvas&gt; &lt;/div&gt; </code></pre>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USCool Guy Yo
    1. USCool Guy Yo
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POmouseOver ImageReplace in canvas
      1. This table or related slice is empty.
      1. VTUpMod
    1. This table or related slice is empty.
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload