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  1. PO
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    <p>I see a number of problems here. First and foremost, I don't believe your code is properly balanced. I believe as a first step it should look more like:</p> <pre><code>&lt;script language="javascript"&gt; document.write('&lt;table border = \"3\"&gt;'); while(i &lt;= y) { document.write('&lt;tr&gt;'); j = 0; while(j &lt;= x) { if (i == 0) { if (j == 0) { document.write(' &lt;th&gt;&lt;/th&gt; '); } else { document.write('&lt;th&gt;'); document.write("x = " + j); document.write('&lt;/th&gt;'); } } else { if (j == 0) { document.write('&lt;th&gt;'); document.write("y = " + i); document.write('&lt;/th&gt;'); } else { document.write('&lt;td&gt;'); document.write(operation(i,j)); document.write('&lt;/td&gt;'); } } j++; } document.write('&lt;/tr&gt;'); i++; } document.write('&lt;/table&gt;'); &lt;/script&gt; </code></pre> <p>Secondarily it looks to me like you're never really ever instantiating i, and while you do it with j, you're not doing it early enough.</p> <p>At the line while(i &lt;= y) the interpreter is basically seeing:</p> <pre><code>while (undefined &lt;= undefined) { </code></pre> <p>At some level, I'm honestly not sure that document.writes is really the best solution for you, I would probably recommend using document.createElement instead, but that's perhaps more of a personal preference.</p> <p>Attempting to step a level further out yet sticking with your methodology, I might look toward something like:</p> <pre><code>function generateTable (width, height) { document.write("&lt;table border=\"3\"&gt;"); var i = 1; while (i &lt;= height) { document.write("&lt;tr&gt;"); var j = 1; while (j &lt;= width) { if (i == 0) { // header row document.write("&lt;th&gt;"+ j +" x "+ i +"&lt;/th&gt;"); } else { document.write("&lt;td&gt;"+ j +" x "+ i +"&lt;/td&gt;"); } j++; } document.write("&lt;/tr&gt;"); i++; } document.write("&lt;/table&gt;"); } generateTable(5, 10); </code></pre>
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    1. POJavaScript table overwriting html file
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    1. USwhoughton
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    1. COthank you for your reply.. so, this should solve my problem with overwriting ? This is not the full code, just the part with writing to the doc :)
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      1. USivanz
    2. COI'm honestly not sure what overwriting issue you were seeing, given the limited context, but it seems to write out reasonably well in my limited testing.
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    3. COeverything from my layout disappear, only the created table is there
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