javascript - How do I find the sum value of an array of objects in a loop? -


i'm not sure if wording of question accurate based on description of problem please edit if can more accurate.

i trying build stamp duty calculator improve js, have array of objects different "bands" , "percents" using calculate tax based on users input. have attached image better understanding

enter image description here

i displaying amount of tax each band in table , trying find total tax finding sum of values in "tax" column.

currently displaying highest value.

i have tried can thing off , nothing has worked, how can fix this?

here code,

 $(function (jquery) {       (function stampdutycalculator() {       var taxbands = [          {              min: 0,              max: 125000,              percent: 0          },          {              min: 125000,              max: 250000,              percent: 0.02          },          {              min: 250000,              max: 925000,              percent: 0.05          },          {              min: 925000,              max: 1500000,              percent: 0.1          },          {              min: 1500000,              max: null,              percent: 0.12          }      ];       var secondtaxbands = [          {              min: 0,              max: 125000,              percent: 0.03          },          {              min: 125000,              max: 250000,              percent: 0.05          },          {              min: 250000,              max: 925000,              percent: 0.08          },          {              min: 925000,              max: 1500000,              percent: 0.13          },          {              min: 1500000,              max: null,              percent: 0.15          }      ];       var tablerow = "<tr><td>{taxband}</td><td>{percent}</td><td>{taxable}</td><td class='tax'>{tax}</td></tr>",           table = $("#explained-table"),          results = $("#results"),          effectiverate = $("#effective-rate");           $('#calculate').on('click', function calculatebutton() {              if ($("#input-value").val() !== '') {                   calculatestampduty();              }          });           function calculatestampduty() {              var bands = taxbands,                         userinput = parseint($("#input-value").val(), 10),                  row;              if ($('#second-home').is(':checked')) {                  bands = secondtaxbands;             }              if (table.length) {                   table.find("tr:gt(0)").remove();              }              var taxablesum = function (x, y) {                  var maxband = (x !== null) ? math.min(x, userinput) : maxband = userinput;                  return maxband - y;             },                 tax = function (taxablesum, x) {                  return (taxablesum * x).tofixed(2);             },                 effectiverate = function(tax) {                     return math.round(tax / userinput * 100).tofixed(1);             },                   numberwithcommas = function (x) {                 var parts = x.tostring().split(".");                 parts[0] = parts[0].replace(/\b(?=(\d{3})+(?!\d))/g, ",");                 return parts.join(".");             };                          (var = 0; < bands.length; i++) { //for loop loop through array of objects              var min = bands[i].min, //variables used arguments in functions above, not best practice declare functions in loop                 max = bands[i].max,                 pct = bands[i].percent,                 taxablesum = taxablesum(max, min),                 tax = tax(taxablesum, pct),                 erate = effectiverate(tax);              if (max !== null) { //replaces template tags min, max , percent values in object                 row = tablerow.replace("{taxband}", "£" + min + " - " + "£" + max).replace("{percent}", (pct * 100) + "%");             } else {                 row = tablerow.replace("{taxband}", "£" + min + "+").replace("{percent}", (pct * 100) + "%"); //used last taxband             }               if (taxablesum < 0) {                 row = row.replace("{taxable}", "£" + 0 + ".00").replace("{tax}", "£" + 0 + ".00");             }   else if (userinput > 1500000) {                     row = row.replace("{taxable}", "£" + numberwithcommas(taxablesum)).replace("{tax}", "£" + numberwithcommas(tax));                     results.text("£" + numberwithcommas(tax));                     effectiverate.text(erate + "%");             }   else if (userinput > 925000) {                     row = row.replace("{taxable}", "£" + numberwithcommas(taxablesum)).replace("{tax}", "£" + numberwithcommas(tax));                     results.text("£" + numberwithcommas(tax));                     effectiverate.text(erate + "%");             }   else if (userinput > 250000) {                     row = row.replace("{taxable}", "£" + numberwithcommas(taxablesum)).replace("{tax}", "£" + numberwithcommas(tax));                     results.text("£" + numberwithcommas(tax));                     effectiverate.text(erate + "%");             }   else if (userinput > 125000) {                     row = row.replace("{taxable}", "£" + numberwithcommas(taxablesum)).replace("{tax}", "£" + numberwithcommas(tax));                     results.text("£" + numberwithcommas(tax));                     effectiverate.text(erate + "%");             }   else {                     row = row.replace("{taxable}", "£" + userinput).replace("{tax}", "£" + numberwithcommas(tax));                     results.text("£" + (numberwithcommas(tax) * 0));                     effectiverate.text(erate * 0 + "%");             }              table.append(row);              console.log(number(tax) );         }          }       }());  });

edit here fiddle https://jsfiddle.net/p6c1w5r3/

some of buttons functionality not completed yet, wanted calculations correct first

check fiddle. https://jsfiddle.net/p6c1w5r3/7/

basically create variable outside loop called totaltax. inside loop add tax value variable.

finally, should not set label text every time, instead set once @ end.

oh btw, tax calculation returns weird values when amount less 20000.


-

Comments

Post a Comment

Popular posts from this blog

PySide and Qt Properties: Connecting signals from Python to QML -

i trying run simple pyside appliccation design made in qml. call function in qml python in separated thread. i have following qml view: import qt 4.7 rectangle { visible: true width: 100; height: 100 color: "lightgrey" text { id: datestr objectname: "datestr" x: 10 y: 10 text: "init text" font.pixelsize: 12 function updatedata(text) { datestr.text = qstr(text) console.log("you said: " + text) } } } here application: some imports.... #!/usr/bin/python import sys import time pyside import qtdeclarative, qtcore pyside.qtgui import qapplication pyside.qtdeclarative import qdeclarativeview the qthread worker.... #worker thread class worker(qtcore.qthread): updateprogress = qtcore.signal(int) def __init__(self, child): qtcore.qthread.__init__(self) self.child = child def run(self):
Read more

c# - DevExpress.Wpf.Grid.InfiniteGridSizeException was unhandled -

Image
when using devexpress, see error: devexpress.wpf.grid.infinitegridsizeexception unhandled message="by default, infinite grid height not allowed since grid rows rendered , hence grid work slowly. fix issue, should place grid container give finite height grid, or should manually specify grid's height or maxheight. note can avoid exception setting gridcontrol.allowinfinitegridsize static property true, in case grid run slowly." the problem dxgrid has infinite height. to fix, set height non-infinite. snoop absolutely invaluable this: if "height" xaml element infinite (i.e. 0 or nan ), can set using one of following: option 1: height="{binding path=actualheight, relativesource={relativesource mode=findancestor, ancestortype=uielement}}" option 2: verticalalignment="stretch" option 3: height="auto" hint: use verticalalignment="stretch" if child of grid <rowdefinition height=
Read more

scala - 'wrong top statement declaration' when using slick in IntelliJ -

Image
i'm porting project scala 2.9 2.10, therefore have use slick instead of scalaquery. i'm using slick 2.1.0 since supports ms access. according this tutorial , upgrade guide changed robs object class , added val robs : why error message wrong top statement declaration , how rid of it? edit: i'm new scala... according this question seems can't put val outside of methods or classes, right? code above directly in packge. right approach slick then? should move code in class or trait? according this changed val robs = tablequery[robs] to object robs extends tablequery(new robs(_)) {} . no warnings or errors anymore. :)
Read more