KDJ

Stochastic oscillator indicator.

Usage

const data = await sdk.getKlineWithIndicators('sz000858', {
  indicators: { kdj: true }
});

data.forEach(k => {
  console.log(`K: ${k.kdj?.k}, D: ${k.kdj?.d}, J: ${k.kdj?.j}`);
});

Manual Calculation

import { calcKDJ } from 'stock-sdk';

const highs = [/* high prices */];
const lows = [/* low prices */];
const closes = [/* close prices */];

const result = calcKDJ(highs, lows, closes, 9, 3, 3);

// result.k - K line
// result.d - D line
// result.j - J line

Parameters

Parameter	Default	Description
period	9	RSV period
kPeriod	3	K smoothing period
dPeriod	3	D smoothing period

Formula

$$RSV = \frac{Close - Low_n}{High_n - Low_n} \times 100$$ $$K = \frac{2}{3} K_{prev} + \frac{1}{3} RSV$$ $$D = \frac{2}{3} D_{prev} + \frac{1}{3} K$$ $$J = 3K - 2D$$