Case Analysis of JavaScript rounding

This article mainly explains the "case analysis of JavaScript rounding". The content of the explanation is simple and clear, and it is easy to learn and understand. Please follow the editor's train of thought to study and learn "JavaScript rounding case analysis".

The method of rounding in JavaScript: 1, rounding down through Math.floor (); 2, rounding up through Math.ceil (); 3, rounding up through Math.round (); 4, rounding through parseInt ().

This article operating environment: windows7 system, javascript1.8.5 version, Dell G3 computer.

How to round it up in JavaScript?

Several methods of JavaScript rounding

Math.floor () rounding down

Math.floor (3.141592654) / / 3

Math.ceil () rounding up

Math.ceil (3.141592654) / / 4

Math.round () is rounded

Math.round (3.141592654) / / 3

ParseInt () removes the decimal point and the decimal point

ParseInt (3.141592654) / / 3

~ convert data to Number type

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