javascript - Getting one input field to take two entered values and perform Math.pow() -


i have javascript / jquery calculator button performs mathematical operation of raising first entered integer second entered integer via function:

$('#button-power').click(function(form){ var base = this.form.display.value; // 1st value entered user  settimeout (function(){       $("#disp").val('0'); // resets calc display 0 accept second argument     },0.5);  $("#button-enter").click(function(form){ // 'equals' button     var exponent = this.form.display.value; // 2nd value entered user     var result = math.pow(base,exponent);  settimeout (function (form){       $('#disp').val(result);     },1);     });  });

where #disp calculator display. function works fine , produces correct answer, causes other buttons on calculator behave incorrectly after calculation performed using power button. know has fact function requires 2 values other calculator buttons require 2 inputs (one performs permutation calculations, example) exhibit similar behavior. trying divide 8 2 after performing power function return off wall 35 instance.

relevant functions may contributing behavior include:

function checknum(str) {   (var = 0; < str.length; i++) {     var ch = str.substring(i, + 1)     if (ch < "0" || ch > "9") {       if (ch != "/" && ch != "*" && ch != "+" && ch != "-" && ch != "." && ch != "(" && ch != ")" && ch != "%") {       $('#disp').val("error");         return false       }     }   }   return true }  function addchar(input, character) {   if (input.value == null || input.value == "0"){     input.value = character}   else{     input.value += character} };  $.each([1, 2, 3, 4, 5, 6, 7, 8, 9, 0], function(i, e) {   $('#button-' + e).click(function() {   if ($('#disp').hasclass("result")) {       $('#disp').removeclass("result").val("");     }     addchar(this.form.display, e);   }); });

other buttons on calculator require 1 input, cosine button example, utilize javascript , jquery in way:

function cos(form) {     form.display.value = math.cos(form.display.value); }  $('#button-cos').click(function() {   if (checknum(this.form.display.value)) {     cos(this.form);     $('#disp').addclass("result");   } });

i wondering if possible calculator display 2^5 , parse somehow perform math.pow(2,5)? think solve problem.

here's fiddle of calculator: https://jsfiddle.net/lh2x7vja/819/

apologies messy script - have yet clean up!


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