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POhow to use java script to create new div's inside an existing div?
 

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  1. POhow to use java script to create new div's inside an existing div?
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    <p>The page i am making is designed to:</p> <ol> <li>take the dimensions of a set of tiles and a wall then print out how many tiles are needed to fill the area of the wall</li> <li>print on screen a visual representation of what the wall will look like with the tiles on. </li> </ol> <p>so far i've managed to successfully complete the first part. </p> <pre><code>&lt;style&gt; #wallspace { width:300px; height:auto; overflow:hidden; position:relative; margin:auto; } &lt;/style&gt; &lt;form &gt; Tile Dimensions&lt;br /&gt; Width: &lt;input type="text" id="tile_width" /&gt;cm height: &lt;input type="text" id="tile_height" /&gt;cm &lt;br /&gt; Wall Dimensions&lt;br /&gt; Width: &lt;input type="text" id="wall_width" /&gt;cm height:&lt;input type="text" id="wall_height" /&gt;cm &lt;/form&gt; &lt;button onclick="createWall()" &gt;Try it&lt;/button&gt; &lt;p id="result"&gt; &lt;/p&gt; &lt;div id="wallspace"&gt; &lt;/div&gt; &lt;script language="javascript" type="text/javascript"&gt; function createWall() { //collect dimensions from user input var tileWidth = document.getElementById("tile_width").value; var tileHeight = document.getElementById("tile_height").value; var wallWidth = document.getElementById("wall_width").value; var wallHeight = document.getElementById("wall_height").value; //find the areas of the tile and the wall var tileArea = tileWidth * tileHeight; var wallArea = wallWidth * wallHeight; //divide these to find the number of tiles needed var noOfTiles = (wallArea/tileArea); document.getElementById("result").innerHTML="number of tiles needed are " + noOfTiles; } &lt;/script&gt; </code></pre> <p>Now when it comes to printing the wall, I was trying to use a nested for loop to print the tiles. As below:</p> <pre><code>function printTiles() { var tileWidth = document.getElementById("tile_width").value; var tileHeight = document.getElementById("tile_height").value; var wallWidth = document.getElementById("wall_width").value; var wallHeight = document.getElementById("wall_height").value; //rows for (var i = 0; i &lt; wallHeight; i = i + tileHeight) { //collumns for (var a = 0; a &lt; wallWidth; a = a + tileWidth) { var div = document.createElement("div"); div.style.width = tileWidth + "px"; div.style.height = tileHeight + "px"; div.style.cssFloat = "left"; div.style.borderWidth = "2px"; div.style.borderStyle = "solid"; div.innerHTML = i; document.getElementById("wallspace").appendChild(div); } } </code></pre> <p>so the nested for loop would print each column on the row than go to the next row so on. For some reason my printTiles is not working at all and i dont understand why? secondly, when i get it working can i simply use</p> <pre><code>document.getElementById("wallspace").innerHTML=printTiles(); </code></pre> <p>Leave a comment if you don't understand what i'm trying to do and i'll try to explain it better.</p>
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