how to remove or ignore a , in a javascript number code example

Example 1: remove decimals javascript

Math.floor(5.9) //5
Math.ceil(5.1) //6
Math.round(9.5) //10
5.3 >> 0 //5 (same as Math.floor)
7.9 >> 0 //7 (same as Math.floor)

Example 2: remove floating point javascript

Math.floor(5.9) // 5 rounds down
Math.ceil(5.1) // 6 rounds up
Math.round(5.5) // 6 round to nearest integer
Math.trunc(5.1) // 5 removes fractional part