Build a Crypto Position-Risk Calculator in JavaScript
AI disclosure: This article was prepared with AI assistance from my real trading notes, calculations, and review. The code and examples were checked before publication. Leverage is often the first number traders look at, but it is not the number that tells us how many dollars a stop-loss may cost. A more useful pre-trade calculation combines position quantity, entry price, stop price, fees, and a…
This article demonstrates how to create a JavaScript-based calculator to estimate the risk associated with a crypto position. The tool takes into account several factors, including position quantity, entry and stop prices, leverage, entry and exit fees, and slippage. The calculator ensures that the stop-loss order is placed on the correct side of the entry price to protect the trader's investment.
The function `calculatePositionRisk` accepts various parameters such as trade side (long or short), quantity, entry price, stop price, leverage, entry and exit fee rates, and slippage rate. After validating the input values, the function computes the notional amount, stop distance, stop distance percentage, price loss, entry fee, estimated exit fee, slippage buffer, and overall estimated total risk.
By calculating these metrics, traders can gain a better understanding of the potential risks and costs associated with their leveraged positions, allowing them to make more informed decisions when placing trades.
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