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POWhy are my event listeners only working for the last element?
 

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  1. POWhy are my event listeners only working for the last element?
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    <p>The problem is that when I drag/drop a picture, it always gets put on the last letter. Here's an image of what I am talking about:</p> <p><img src="https://i.stack.imgur.com/FD8uE.png" alt="enter image description here"></p> <p>Here is my code:</p> <pre><code>function mattes_draw_letter(x, y, width, height, letter, position) { var canvas = document.createElement('canvas'); canvas.style.position = "absolute"; canvas.style.top = 0 + "px"; canvas.id = "canvas_opening_" + position; canvas.style.zIndex = 5; var ctx = canvas.getContext("2d"); ctx.lineWidth = 1; ctx.fillStyle = '#bfbfbf'; ctx.strokeStyle = '#000000'; ctx.beginPath(); ctx.moveTo(x + letter[0] * width, y + letter[1] * height); for (i = 0; i &lt; letter.length; i+=2) { if (typeof letter[i+3] !== 'undefined') { ctx.lineTo(x + letter[i+2] * width, y + letter[i+3] * height); } } ctx.fill(); ctx.stroke(); ctx.closePath(); $("#mattes").append(canvas); canvas.addEventListener("drop", function(event) {drop(event, this);}, false); canvas.addEventListener("dragover", function(event) {allowDrop(event);}, false); canvas.addEventListener("click", function() {photos_add_selected_fid(this);}, false); } </code></pre> <p>Here is the code that has the for loop:</p> <pre><code>function mattes_create_openings(openings) { var opening_array = new Array(); var x = 0; var y = 0; var opening_width = 0; var opening_height = 0; $(openings).each(function(i, el) { x = $(el).find("x").text() * ppi; y = $(el).find("y").text() * ppi; opening_width = $(el).find("width").text() * ppi; opening_height = $(el).find("height").text() * ppi; var type = $(el).find("type").text(); var text = $(el).find("text").text(); var ellipse = (type == "ellipse") ? " border-radius: 50% " : ""; if ("letter" == type) { var letter = mattes_get_letter_array(text); var letter_width = (opening_width - (text.length * 0.5 * ppi)) / text.length; var space = 0.5 * ppi; var letterX = x; var letterY = y; var letter_height = opening_height; mattes_draw_letter(letterX, letterY, letter_width, letter_height, letter, i); letterX += (space + letter_width); } else { $("#mattes").append("&lt;div id='opening_" + i + "' style='background-color: #bfbfbf; position: absolute; left: " + x + "px; top: " + y + "px; height: " + opening_height + "px; width: " + opening_width + "px; overflow: hidden; z-index: 4;" + ellipse + "' ondrop='drop(event, this)' ondragover='allowDrop(event)' onclick='photos_add_selected_fid(this);'&gt;&amp;nbsp;&lt;/div&gt;"); } //TODO multiple openings max/min -x,y,width, height opening_array["x"] = x; opening_array["y"] = y; opening_array["opening_width"] = opening_width; opening_array["opening_height"] = opening_height; }); return opening_array; } </code></pre>
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    1. PO
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      1. PTAnswer
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    1. USAllisonC
    1. USAllisonC
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    1. VO
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      1. POWhy are my event listeners only working for the last element?
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      1. VTUpMod
    1. COAre you calling the `mattes_draw_letter` for every letter?
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      1. POWhy are my event listeners only working for the last element?
      1. USputvande
    2. COTip: `function(event) {allowDrop(event);}` same as `allowDrop`. Also when you have to pass `this` as an argument, think twice, there's probably a better way to do it, `this` depends on how you call the function.
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      1. POWhy are my event listeners only working for the last element?
      1. USelclanrs
    3. CO@putvande - yes the function is called for every letter, it's in a for loop
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      1. POWhy are my event listeners only working for the last element?
      1. USAllisonC
 

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