Float64Array vs ArrayBuffer
Float64Array and ArrayBuffer are both JavaScript Typed Array APIs, and choosing between them is a common point of confusion. This page compares their syntax, parameters, return values, and typical use cases so you can pick the right one. Float64Array: 64-bit float array. Its syntax is new Float64Array(length). ArrayBuffer: Fixed-length binary buffer. Its syntax is new ArrayBuffer(length). Example of Float64Array: new Float64Array([1.5, 2.5]). Example of ArrayBuffer: new ArrayBuffer(16). Read the full references for Float64Array and ArrayBuffer to see edge cases, time complexity, browser support, and the mistakes developers most often make with each. Other Typed Array APIs worth comparing: Int8Array, Uint8Array, Int32Array, Uint16Array, BigInt64Array, BigUint64Array. Both belong to the Typed Array category in the JS Reference documentation, which covers 48 entries in total. Try both in the JavaScript playground to see the behavioral difference live.