How to solve the problem of floating-point Computing with JavaScript

Editor to share with you how to solve the problem of floating-point computing JavaScript, I believe that most people do not know much about it, so share this article for your reference, I hope you can learn a lot after reading this article, let's go to know it!

Floating point calculation problem 0.1 + 0.2 = = 0.3 / / is false9007199254740992 + 1 / / is equal to 9007199254740992 9007199254740992 + 2 / / is equal to 9007199254740994

Why? Because 0.1-0.2 equals 0.300000000000004. JavaScript numbers are built according to the IEEE 754 standard and are represented internally by 64-bit floating-point decimals.

You can solve this problem by using toFixed () and toPrecision ().

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