stock-indicator/dist/idicators/kdj.js

Stock Indicator Library

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.KDJ = KDJ;
const common_1 = require("../common");
/**
 * - KDJ 随机指标
 * @param {number[]} CLOSE - 收盘价序列
 * @param {number[]} HIGH - 最高价序列
 * @param {number[]} LOW - 最低价序列
 * @param {number} N - 周期,default: 9
 * @param {number} M1 - 平滑参数,default: 3
 * @param {number} M2 - 平滑参数,default: 3
 * @returns {{ K: TMixed[]; D: TMixed[]; J: TMixed[] }}
 */
function KDJ(CLOSE, HIGH, LOW, N = 9, M1 = 3, M2 = 3) {
    // - check input parameters
    (0, common_1.checkArrayOfNumbers)(CLOSE, "CLOSE");
    (0, common_1.checkArrayOfNumbers)(HIGH, "HIGH");
    (0, common_1.checkArrayOfNumbers)(LOW, "LOW");
    (0, common_1.checkNumber)(N, 1, CLOSE, "N", "CLOSE");
    (0, common_1.checkNumber)(M1, 1, N, "M1", "N");
    (0, common_1.checkNumber)(M2, 1, N, "M2", "N");
    // - calculate KDJ
    const llv = LOW.reduce((prev, cur, i) => {
        return [
            ...prev,
            Math.min(...LOW.slice(Math.max(0, i - N + 1), i + 1).map((v) => v !== null && v !== void 0 ? v : 0)),
        ];
    }, []);
    const hhv = HIGH.reduce((prev, cur, i) => {
        return [
            ...prev,
            Math.max(...HIGH.slice(Math.max(0, i - N + 1), i + 1).map((v) => v !== null && v !== void 0 ? v : 0)),
        ];
    }, []);
    const RSV = CLOSE.map((v, i) => (((v !== null && v !== void 0 ? v : 0) - llv[i]) / (hhv[i] - llv[i])) * 100);
    const K = (0, common_1.funSMA)(RSV, M1, 1);
    const D = (0, common_1.funSMA)(K, M2, 1);
    const J = K.map((v, i) => { var _a; return (0, common_1.funRound)(3 * (v !== null && v !== void 0 ? v : 0) - 2 * ((_a = D[i]) !== null && _a !== void 0 ? _a : 0), 3); });
    return {
        K: K.map((v) => (0, common_1.funRound)(v, 3)),
        D: D.map((v) => (0, common_1.funRound)(v, 3)),
        J,
    };
}
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