Quickstart

const len = input.int("Length", 14);
const src = input.source("Source", "close");

plot("MA", null, { color: "#22c55eFF", linewidth: 2 });
plot("Diff", null, { color: "#a78bfaFF", style: "histogram" });

onBar(() => {
  const ma = ta.sma(src, len);
  plot("MA", ma);
  plot("Diff", ctx.close() - ma);
});

// Top-level: runs ONCE when the script is loaded.
const len = input.int("Length", 14);    // user-tweakable parameter
plot("MA", null, { color: "#22c55eFF" }); // declare a series and its style

// onBar: runs ONCE PER BAR. This is where computation happens.
onBar(() => {
  const ma = ta.sma(src, len);   // compute SMA at this bar
  plot("MA", ma);                // emit the value for this bar
});