新税收计算

新税收计算

在线计算

<script>
    var s = eval("3000 * 0.03 + (12000 - 3000) * 0.1 + (25000 - 12000) * 0.2 + (35000 - 25000) * 0.25");
    console.log(s);
    function computeTax(pretaxAmount) {
        var excess = pretaxAmount - 5000;
        if (excess > 0 && excess <= 3000) {
            return excess * 0.03;
        } else if (excess > 3000 && excess <= 12000) {
            return 90 + (excess - 3000) * 0.1; // 3000 * 0.03 + (excess - 3000) * 0.1;
        } else if (excess > 12000 && excess <= 25000) {
            return 990 + (excess - 12000) * 0.2; // 3000 * 0.03 + (12000 - 3000) * 0.1 + (excess - 12000) * 0.2;
        } else if (excess > 25000 && excess <= 35000) {
            return 3590 + (excess - 25000) * 0.25; // 3000 * 0.03 + (12000 - 3000) * 0.1 + (25000 - 12000) * 0.2 + (excess - 25000) * 0.25;
        } else if (excess > 35000 && excess <= 55000) {
            return 6090 + (excess - 35000) * 0.3; // 3000 * 0.03 + (12000 - 3000) * 0.1 + (25000 - 12000) * 0.2 + (35000 - 25000) * 0.25 + (excess - 35000) * 0.3;
        } else if (excess > 55000 && excess <= 80000) {
            return 12090 + (excess - 55000) * 0.35; // 3000 * 0.03 + (12000 - 3000) * 0.1 + (25000 - 12000) * 0.2 + (35000 - 25000) * 0.25 + (55000 - 35000) * 0.3 + (excess - 55000) * 0.35;
        } else {
            return 19590 + (excess - 80000) * 0.45; // 3000 * 0.03 + (12000 - 3000) * 0.1 + (25000 - 12000) * 0.2 + (35000 - 25000) * 0.25 + (55000 - 35000) * 0.3 + (80000 - 55000) * 0.35 + (excess - 80000) * 0.45;
        }
    }

    var preTaxInput = document.querySelector(".pre-tax");
    var afterTaxInput = document.querySelector(".after-tax");
    var computeBtn = document.querySelector(".compute-tax");

    computeBtn.onclick = function () {
        if (preTaxInput.value != "") {
            var pretaxAmount = preTaxInput.value;
            if (pretaxAmount <= 5000) {
                afterTaxInput.value = `您无需缴税`;
            } else {
                var tax = computeTax(pretaxAmount);
                afterTaxInput.value = pretaxAmount - tax;
            }
        }
    }
</script>