In JavaScript, eval(010) returns 8 [duplicate]

by

Because 010 is parsed as octal. Javascript treats a leading zero as indicating that the value is in base 8.

Similarly, 0x10 would give you 16, being parsed in hex.

If you want to parse a string using a specified base, use parseInt:

parseInt('010', 8); // returns 8.
parseInt('010',10); // returns 10.
parseInt('010',16); // returns 16.

More Related Contents:

  1. Chrome extension that enables chatting with users on same page [closed]
  2. Pure JavaScript equivalent of jQuery’s $.ready() – how to call a function when the page/DOM is ready for it [duplicate]
  3. Prevent scrolling of parent element when inner element scroll position reaches top/bottom?
  4. Refresh/reload the content in Div using jquery/ajax
  5. Javascript RegExp + Word boundaries + unicode characters
  6. How to submit a form with JavaScript by clicking a link?
  7. Input value is a string instead of a number
  8. Break promise chain and call a function based on the step in the chain where it is broken (rejected)
  9. What is the difference between & vs @ and = in angularJS
  10. AngularJS toggle class using ng-class
  11. is the + operator less performant than StringBuffer.append()
  12. Export to xls using angularjs
  13. Run a website in fullscreen mode
  14. How can I view network requests (for debugging) in React Native?
  15. Split string into array without deleting delimiter?
  16. Is there a limit on length of the key (string) in JS object?
  17. grunt (minimatch/glob) folder exclusion
  18. Mail attachment wrong media type Gmail API
  19. How to use lodash to find and return an object from Array?
  20. listen EADDRNOTAVAIL error in Node.js
  21. Split a string based on multiple delimiters
  22. Get data attribute of script tag?
  23. Why use semicolon? [duplicate]
  24. how to set displayName in a functional component [React]
  25. d3 force directed layout – link distance priority
  26. jQuery: more than one handler for same event
  27. How to debug dynamically loaded JavaScript (with jQuery) in the browser’s debugger itself?
  28. CSS /JS to prevent dragging of ghost image?
  29. Moment.js months difference
  30. JavaScript alert box with timer

Leave a Comment