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POJavascript parseInt error
 

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    <p>Making a program to display a table of student grades. Teacher inputs grades from a prompt based on the number of assignments( g &lt;= assignments; in the loop). So I'm making it so it averages the the grades together and displays a Letter grade. Right now, I'm getting an error, that "score is not defined". Not sure why. JSFiddle says it's completely valid, and I have no idea what's wrong.</p> <p><strong>UPDATE</strong> <strong>Thanks guys, var score = 0; fixed it... But my Loop only works once now, even if I specify it to loop 5 times.</strong></p> <p>HERE IS MY FIDDLE: <a href="http://jsfiddle.net/ndSMa/" rel="nofollow">http://jsfiddle.net/ndSMa/</a></p> <pre><code>// second table row begin var rowtwo = document.createElement("tr"); var student = document.createElement("td"); var studentprompt = prompt("What is the student's name?"); var studenttext = document.createTextNode(studentprompt); student.appendChild(studenttext); rowtwo.appendChild(student); for (var g = 1; g &lt;= assignments; g++) { while (!grade) { var grade = prompt("Please enter the student score for assignment" + g + "."); var gradecolumn = document.createElement("td"); var gradetext = document.createTextNode(grade); gradecolumn.appendChild(gradetext); rowtwo.appendChild(gradecolumn); if (parseInt(grade, 10)) { // accumulate score score += parseInt(grade, 10); var totalscore = score/assignments; } // grade is not a number else grade = undefined; } if (score &gt;= 94) { var acolumn = document.createElement("td"); var atext = document.createTextNode("A"); totalcolumn.appendChild(atext); rowtwo.appendChild(acolumn); } else if (score &gt;= 90) { var aminuscolumn = document.createElement("td"); var aminustext = document.createTextNode("A-"); totalcolumn.appendChild(aminustext); rowtwo.appendChild(aminuscolumn); } else if (score &gt;= 87) { var bpluscolumn = document.createElement("td"); var bplustext = document.createTextNode("B+"); totalcolumn.appendChild(bplustext); rowtwo.appendChild(bpluscolumn); } else if (score &gt;= 84) { var bcolumn = document.createElement("td"); var btext = document.createTextNode("B"); totalcolumn.appendChild(btext); rowtwo.appendChild(bcolumn); } else if (score &gt;= 80) { var bminuscolumn = document.createElement("td"); var bminustext = document.createTextNode("B-"); totalcolumn.appendChild(bminustext); rowtwo.appendChild(bminuscolumn); } else if (score &gt;= 77) { var cpluscolumn = document.createElement("td"); var cplustext = document.createTextNode("C+"); totalcolumn.appendChild(cplustext); rowtwo.appendChild(cpluscolumn); } else if (score &gt;= 74) { var ccolumn = document.createElement("td"); var ctext = document.createTextNode("C"); totalcolumn.appendChild(ctext); rowtwo.appendChild(ccolumn); } else if (score &gt;= 70) { var cminuscolumn = document.createElement("td"); var cminustext = document.createTextNode("C-"); totalcolumn.appendChild(cminustext); rowtwo.appendChild(cminuscolumn); } else if (score &gt;= 67) { var dpluscolumn = document.createElement("td"); var dplustext = document.createTextNode("D+"); totalcolumn.appendChild(dplustext); rowtwo.appendChild(dpluscolumn); } else if (score &gt;= 64) { var dcolumn = document.createElement("td"); var dtext = document.createTextNode("D"); totalcolumn.appendChild(dtext); rowtwo.appendChild(dcolumn); } else if (score &gt;= 60) { var dminuscolumn = document.createElement("td"); var dminustext = document.createTextNode("D-"); totalcolumn.appendChild(dminustext); rowtwo.appendChild(dminuscolumn); } else if (score &lt; 60) { var fcolumn = document.createElement("td"); var ftext = document.createTextNode("F"); totalcolumn.appendChild(ftext); rowtwo.appendChild(fcolumn); } } tableBody.appendChild(rowtwo); </code></pre>
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    1. COI don't see a variable declaration for `score`. Is that included elsewhere? Have you tried adding a declaration for it if not, a la `var score = 0;` at the top of your sample?
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