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simevidas/es6-numbers-summary.md

Last active September 21, 2015 17:30
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A summary of Nicolas Bevacqua’s post on ES6 Number improvements
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es6-numbers-summary.md

ES6 Number improvements

  • use the 0b prefix for binary, and the 0o prefix for octal integer literals
  • Number.isNaN and Number.isFinite are like their global namesakes, except that they don’t coerce the argument to Number
  • Number.parseInt and Number.parseFloat are exactly the same as their global namesakes
  • use Number.isInteger to check if the argument is a Number value that doesn’t have a decimal part
  • use Number.EPSILON to check if the difference between two Number values is negligible (e.g. the difference between 0.1 + 0.2 and 0.3 is negligible)
  • Number.MAX_SAFE_INTEGER and Number.MIN_SAFE_INTEGER are the largest and smallest integers that can be safely and precisely represented in JavaScript
  • use Number.isSafeInteger to check if an integer is within those bounds

Read the full blog post here.

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