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Re: Variable subtraction

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On 2013-09-30 01:34, k wrote:
> <script>
> var clicked=98;

This "clicked" is a global variable.

> function ten(){
> if(clicked<100){
> alert('Not enough clicks');
> }else{
> var clicked = - 100;
> // line above doesn't work

This "clicked" variable is local to the ten() function, because you used
"var". It has nothing to do with the global one. If you leave out the
"var", you'll address the global variable, as you probably intended.

By the way, this line would set "clicked" to -100, not subtract 100 from
it. To do substraction, you can use

  clicked = clicked - 100;

or the short form

  clicked -= 100;  // not "= -"

> function five(){
> if(clicked<200){
> alert('Not enough clicks');
> }else{
> var clicked = - 200;
> // line above doesn't work

Same reason as before.


- stefan

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Variable subtraction k <kalezwe@gmail.com> - 2013-09-29 16:34 -0700
  Re: Variable subtraction Stefan Weiss <krewecherl@gmail.com> - 2013-09-30 02:07 +0200
    Re: Variable subtraction k <kalezwe@gmail.com> - 2013-09-29 20:06 -0700

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