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POA good JavaScript to add/remove items from/to array?
 

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    <p>folks! Today I created this script that has the following functionality:</p> <ul> <li>add new items to array</li> <li>list all items from the array</li> <li>remove an item from the array</li> </ul> <p>There are two functions:</p> <ul> <li>addToFood() - adds the value of input to the array and updates innerHTML of div </li> <li>removeRecord(i) - remove a record from the array and updates innerHTML of div</li> </ul> <p>The code includes 3 for loops and you can see it at - <a href="http://jsfiddle.net/menian/3b4qp/1/" rel="noreferrer">http://jsfiddle.net/menian/3b4qp/1/</a></p> <p>My Master told me that those 3 for loops make the solution way to heavy. Is there a better way to do the same thing? Is it better to decrease the loops and try to use splice? Thanks in advance.</p> <p><strong>HTML</strong></p> <pre><code>&lt;!-- we add to our foodList from the value of the following input --&gt; &lt;input type="text" value="food" id="addFood" /&gt; &lt;!-- we call addToFood(); through the following button --&gt; &lt;input type="submit" value="Add more to food" onClick="addToFood();"&gt; &lt;!-- The list of food is displayed in the following div --&gt; &lt;div id="foods"&gt;&lt;/div&gt; </code></pre> <p><strong>JavaScript</strong></p> <pre><code>var foodList = []; function addToFood () { var addFood = document.getElementById('addFood').value; foodList.push(addFood); for (i = 0; i &lt; foodList.length; i++) { var newFood = "&lt;a href='#' onClick='removeRecord(" + i + ");'&gt;X&lt;/a&gt; " + foodList[i] + " &lt;br&gt;"; }; document.getElementById('foods').innerHTML += newFood; } function removeRecord (i) { // define variable j with equal to the number we got from removeRecord var j = i; // define and create a new temporary array var tempList = []; // empty newFood // at the end of the function we "refill" it with the new content var newFood = ""; for (var i = 0; i &lt; foodList.length; i++) { if(i != j) { // we add all records except the one == to j to the new array // the record eual to j is the one we've clicked on X to remove tempList.push(foodList[i]); } }; // make redefine foodList by making it equal to the tempList array // it should be smaller with one record foodList = tempList; // re-display the records from foodList the same way we did it in addToFood() for (var i = 0; i &lt; foodList.length; i++) { newFood += "&lt;a href='#' onClick='removeRecord(" + i + ");'&gt;X&lt;/a&gt; " + foodList[i] + " &lt;br&gt;"; }; document.getElementById('foods').innerHTML = newFood; } </code></pre>
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