js divide round down code example

Example 1: javascript round down

Math.floor(x);

Example 2: js round up decimal

Math.round(3.14159)  // 3
Math.round(3.5)      // 4
Math.floor(3.8)      // 3
Math.ceil(3.2)       // 4

Example 3: javascript floor

Math.floor(1.6);

result: 1