supposing I have variable ex1 equal to -20 and variable ex2 equal to 50. I try to add it in javascript as alert(ex1+ex2); but it alerts -20+50. I'm really confused with this. THanks for the help, even though it might be a really silly question.
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2 Answers
JavaScript is a weakly typed language. So, you have to be careful with the types of data which you use. Without knowing much about your program, this can be fixed like this
alert(parseInt(ex1, 10) + parseInt(ex2, 10));
This makes sure that both ex1 and ex2 are integers. If you think, you would be using floating point numbers
alert(parseFloat(ex1) + parseFloat(ex2));
4 Comments
David Thomas
Don't forget the radix with
parseInt(), though parseFloat() might be a better choice.
thefourtheye
@DavidThomas I was just adding that in the edit :)
rnldpbln
Right parseInt! Thanks! I will give you the correct answer once the 10 mins is up. Sorry that was a really dumb question btw.
thefourtheye
Downvoter, please let me know how I can improve this answer.
Change your code like this
alert(parseInt(ex1) + parseInt(ex2));
answered Feb 27, 2014 at 9:44
MusicLovingIndianGirl
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1 Comment
thefourtheye
Never forget the radix parameter when you use
parseInt