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POJavascript Recursive function seems to exit after first pass
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  1. POJavascript Recursive function seems to exit after first pass
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    copied!<p>I am trying to render a tree like hierarchy while recursing through set a nodes (<strong>index</strong>). I already know the roots(<strong>top</strong>). There are multiple root elements. I am trying to collect the entire html in the variable <strong>tree</strong> (this entire html will be appended to a div later)</p> <pre><code>tree = ""; top = ["1", "11", "14", "17", "72", "73", "74", "78", "79", "98", "99"]; index = { 1: { 'name': "Node 1", 'children': "2,3,4,5,6,7,8,9,10" }, 2: { 'name': "Node 2", 'children': "" }, //.... goes all the way upto 99 } </code></pre> <p>The recursive function makeFT(index,roots) only seems to break after traversing the children of first element in the "top" array. </p> <p>The code for this is at <a href="http://jsbin.com/ugoju4/2/edit" rel="nofollow">jsbin</a> and below. What could be the problem? Is there a better way to do this? Any help is appreciated.</p> <pre><code>makeFT(index, top); function makeFT(index, roots) { console.log(roots); tree == "" ? tree += '&lt;ul&gt;' : tree += '&lt;ul&gt;&lt;hr/&gt;' for (i = 0; i &lt; roots.length; ++i) { n = parseInt(roots[i]); //console.log(n); //console.log(index[n]); tree += '&lt;li&gt;' + roots[i] + '&lt;/span&gt;' + index[n].name; if (index[n].children === "") { tree += '&lt;input class="leaf tree-first-input" type="text" size="2"&gt;' } else { tree += '&lt;input class="non-leaf tree-first-input" type="text" size="2"&gt;' makeFT(index, index[n].children.split(",")); } tree += "&lt;/li&gt;" } tree += '&lt;/ul&gt;&lt;br/&gt;' } </code></pre> <p>UPDATE : Turns out this is a scoping problem and not a recursion problem. The recursion was alright. Since I did not define scope of the variable 'i' while looping through roots array, each subsequent recursed function inherited the value of unscoped 'i' thereby creating the problem. </p>
 

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