js计算个人所得税怎么算
js制作个人所得税计算器，js计算个人所得税怎么算代码教程如下：
1.自定义月工资金额
2.自定义各项社会保险费
计算结果：计算出累计应缴税款，已缴税款，应补（退）税款，实发工资
js实现代码：
function keyControl(evt){
if(!evt) evt = window.event;
var currentCode = evt.keyCode;
if(currentCode == 13){
//document.getElementById("tax").blur();
document.getElementById("btnCalc").click();
cancelKey(evt);
}
}
function cancelKey(evt) {
if (evt.preventDefault) {
evt.stopPropagation();
evt.preventDefault();
}
else {
evt.cancelBubble = true;
evt.returnValue = false;
}
}
$().ready(function(){
if($("#txtIncome").length > 0) {
$("#txtIncome")[0].focus();
}
})
function taxTypeChange() {
if(document.all.taxType.value==0){
location=location.href; return;
}
location=document.all.taxType.value;
}
function incomeChange() {
var income = $("#txtIncome").val();
if(!isNaN(income)) {
$("#txtIncome").val(income);
var taxPeriod = $("#taxPeriod").val();
$("#txtIncomeAll").val(income*taxPeriod);
}
}
function insureChange() {
var insure = $("#txtInsure").val();
if(!isNaN(insure)) {
$("#txtInsure").val(insure);
var taxPeriod = $("#taxPeriod").val();
$("#txtInsureAll").val(insure*taxPeriod);
}
}
function zxfjChange() {
var zxfj = $("#txtZXFJ").val();
if(!isNaN(zxfj)) {
$("#txtZXFJ").val(zxfj);
var taxPeriod = $("#taxPeriod").val();
$("#txtZXFJAll").val(zxfj*taxPeriod);
}
}
function taxPeriodChange() {
incomeChange();
insureChange();
zxfjChange();
}
total_index
function btnCalc_onClick_total_index()
{
clearResult_all_index();
checkData_all_index();
var taxPeriod = parseFloat($("#taxPeriod").val());
var income = parseFloat($("#txtIncome").val());
var incomeAll = parseFloat($("#txtIncomeAll").val());
var lastIncome = incomeAll - income;
var insure = parseFloat($("#txtInsure").val());
var insureAll = parseFloat($("#txtInsureAll").val());
var lastInsure = insureAll - insure;
var zxfj = parseFloat($("#txtZXFJ").val());
var zxfjAll = parseFloat($("#txtZXFJAll").val());
var lastZXFJ = zxfjAll - zxfj;
var baseLine=5000;
//calc___A
var taxableIncome = incomeAll - insureAll - zxfjAll - baseLine*taxPeriod;
var R=0,Q=0;
var A=taxableIncome;
A=A.toFixed(2);
var res = calcRQ_all_index(A);
R = res[0];
Q = res[1];
var taxAll=taxableIncome * R -Q;
taxAll = Math.round(taxAll*100)/100;
//calc___A2
var R2=0,Q2=0,lastTaxAll=0;
var lastTaxableIncome=0;
if(taxPeriod>1){
lastTaxableIncome = lastIncome - lastInsure - lastZXFJ - baseLine*(taxPeriod-1);
var A2=lastTaxableIncome;
A2=A2.toFixed(2);
res = calcRQ_all_index(A2);
R2 = res[0];
Q2 = res[1];
lastTaxAll=lastTaxableIncome * R2 -Q2;
lastTaxAll = Math.round(lastTaxAll*100)/100;
}
tax = taxAll - lastTaxAll;
tax = Math.round(tax*100)/100;
taxTmp = tax>0?tax:0
var realIncome=income - insure - taxTmp;
realIncome = Math.round(realIncome*100)/100;
$("#lblTaxableIncome")[0].innerText=taxableIncome.toFixed(2);
$("#lblTaxRate")[0].innerText=R*100;
$("#lblQuick")[0].innerText=Q;
$("#txtTaxAll")[0].value=taxAll;
$("#txtTaxAlready")[0].value=lastTaxAll;
$("#txtTax")[0].value=tax;
$("#txtRealIncome")[0].value=realIncome;
var geshui100Tips=document.getElementById("geshui100Tips");
if(geshui100Tips){
document.getElementById("geshui100Tips").style.display="block";//鏄剧ず
}
}
function clearResult_all_index()
{
$("#lblTaxableIncome")[0].innerText="0";
$("#lblTaxRate")[0].innerText="0";
$("#lblQuick")[0].innerText="0";
$("#txtTax")[0].value="";
$("#txtTaxAll")[0].value="";
$("#txtTaxAlready")[0].value="";
$("#txtRealIncome")[0].value="";
}
function checkData_all_index()
{
//宸ヨ祫鏀跺叆
var income = parseFloat($("#txtIncome").val());
if(isNaN(income)) {
alert("鏃犳晥鐨勬湰鏈堝伐璧�");
$("#txtIncome")[0].focus();
$("#txtIncome")[0].select();
return;
}
$("#txtIncome").val(income);
var incomeAll = parseFloat($("#txtIncomeAll").val());
if(isNaN(incomeAll)) {
alert("鏃犳晥鐨勭疮璁″伐璧�");
$("#txtIncomeAll")[0].focus();
$("#txtIncomeAll")[0].select();
return;
}
$("#txtIncomeAll").val(incomeAll);
//绀句繚
var insure = parseFloat($("#txtInsure").val());
if(isNaN(insure)) {
alert("鏃犳晥鐨勫悇椤圭ぞ浼氫繚闄╄垂閲戦");
$("#txtInsure")[0].focus();
$("#txtInsure")[0].select();
return;
}
$("#txtInsure").val(insure);
var insureAll = parseFloat($("#txtInsureAll").val());
if(isNaN(insureAll)) {
alert("鏃犳晥鐨勭疮璁″悇椤圭ぞ浼氫繚闄╄垂閲戦");
$("#txtInsureAll")[0].focus();
$("#txtInsureAll")[0].select();
return;
}
$("#txtInsureAll").val(insureAll);
//涓撻」闄勫姞鎵ｉ櫎
var zxfj = parseFloat($("#txtZXFJ").val());
if(isNaN(zxfj)) {
alert("鏃犳晥鐨勪笓椤归檮鍔犳墸闄ら噾棰�");
$("#txtZXFJ")[0].focus();
$("#txtZXFJ")[0].select();
return;
}
$("#txtZXFJ").val(zxfj);
var zxfjAll = parseFloat($("#txtZXFJAll").val());
if(isNaN(zxfjAll)) {
alert("鏃犳晥鐨勭疮璁′笓椤归檮鍔犳墸闄ら噾棰�");
$("#txtZXFJAll")[0].focus();
$("#txtZXFJAll")[0].select();
return;
}
$("#txtZXFJAll").val(zxfjAll);
}
function calcRQ_all_index(A)
{
if(A<=36000){
R=0.03;
Q=0;
}
else if (A>36000 && A<=144000){
R=0.1;
Q=2520;
}else if(A>144000 && A<=300000){
R=0.2;
Q=16920;
}else if(A>300000 && A<=420000){
R=0.25;
Q=31920;
}else if(A>420000 && A<=660000){
R=0.3;
Q=52920;
}else if(A>660000 && A<=960000){
R=0.35;
Q=85920;
}else{
R=0.45;
Q=181920;
}
return new Array(R,Q);
}
function btnReset_onClick_total_index()
{
clearResult_all_index();
$("#txtInsure")[0].value="0";
$("#txtInsureAll")[0].value="0";
$("#txtZXFJ")[0].value="0";
$("#txtZXFJAll")[0].value="0";
$("#txtIncome")[0].value="";
$("#txtIncomeAll")[0].value="0";
$("#txtIncome")[0].focus();
$("#txtIncome")[0].select();
}
显示效果：个税计算器
参考文章：http://www.itmacom.com/gl/33458.html
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