How to rounding in JavaScript

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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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