I need javascript to add 5 to an integer variable, but instead it treats the variable as a string, so it write out the variable, then add 5 onto the end of the "string". How can I force it to do math instead?  var dots = document.getElement...
I have the following code which interprets the numbers as strings and adds them like 100300 instead of 400:  var rate = document.getElementById('pur_price').value; var pprice = document.getElementById('pur_price').value; var rate1 = d...
Please, take a brief look at the code below:  <script type="text/javascript"> function recentpostslist(json) {  document.write('<ul class="recommended">');  var i;  var j;  for (i = 0; i < json.feed.entry.length...
I encountered this problem while trying to add the values of 6 different input, I noticed that if I add 3 of them it works, but if I add more than 3 values it doesn't work.  When I add 3 values between them, everything seems to work correctly but...
I have the following function:   function addChange(result, bill) {   for (var i=0;i<result.length;i++) {     if (result[i][0] === bill[0]) {       result[i][1] = parseFloat(result[i][1]).toPrecision(2) + parseFloat(bill[1]).toPrecision(2);...
I don't understand why in this example addition doesn't work:  <button id="button">Click</button> <p id="counter"></p>  function handler(){     var button = document.getElementById('button'),...
I'm trying to add all the elements of an array in which are embedded 3 other arrays of differing lengths. At the third level are two 1-element arrays whose values I cannot figure out how to access. What am I doing wrong? Please advise (no lamp-th...
Trying to add three numbers in javascript using functions but its not adding them instead it just writes them as one number  function numinput(a,b,c,res){ a = prompt("Enter first number");     b = prompt("Enter second number");     c...
function total() {     var tot = 0;     for(var i = 1; i <= 20; i++)     {         var total_id = "total_" + i;         tot = tot + document.getElementById(total_id).value;     }     document.getElementById(total).value = tot; }   "thi...
I have the following simple math operation.  var a = 1.12345678 + 1; console.log(a);   which results in  2.1234567799999997   why?  I expect the result to be  2.12345678...

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