Number.MIN_VALUE is the smallest positive Number JavaScript can represent — about 5e-324. It is the positive value closest to zero. Anything smaller underflows toward 0. It is a static property, not a method.
Read the notes below before you rely on this property. Prefer feature detection when support is limited.
Use Number.MIN_VALUE. Start with this line.
Number.MIN_VALUE| Call | What it does |
|---|---|
Number.MIN_VALUE | Primary signature. |
Built into JavaScript. Read Number.MIN_VALUE on the Number constructor — no import required.
Number.MIN_VALUE| Parameter | Description |
|---|---|
| Underflow check | Optional. Detect when tiny results become 0 |
| Return Value | Description |
|---|---|
| * | The current value of Number.MIN_VALUE. |
Number.MIN_VALUEPrint the smallest positive Number and confirm it is greater than zero.
console.log(Number.MIN_VALUE);
console.log(Number.MIN_VALUE > 0);Number.MIN_VALUE on the constructor — there is no (5).MIN_VALUE.5e-324.MIN_VALUE > 0 is true — it is not negative.0Divide below the floor and the positive magnitude disappears.
console.log(Number.MIN_VALUE / 2); // 0
console.log(Number.MIN_VALUE / 2 === 0); // trueMIN_VALUE / 2 is too small to store as a positive Number.0 (gradual underflow ends here).0.Infinity; tiny positives become 0.MIN_VALUE vs EPSILONThese constants look “tiny,” but they solve different problems.
console.log(Number.MIN_VALUE);
console.log(Number.EPSILON);
console.log(Number.MIN_VALUE < Number.EPSILON); // trueMIN_VALUE is about 5e-324.EPSILON is about 2.22e-16 — spacing near magnitude 1.MIN_VALUE < EPSILON is true by a huge margin.EPSILON. Tiny positive floor → MIN_VALUE.Number.MIN_VALUE is part of core JavaScript and is Baseline Widely available in modern browsers and Node.js.
Supported in Chrome, Firefox, Safari, Edge, and Node.js for decades. Typical value: 5e-324 (2^-1074).
Bottom line: Use Number.MIN_VALUE freely — no polyfill needed. Prefer the named constant over hard-coding 5e-324.
Learn the largest integer JavaScript can represent exactly as a Number.
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