Javascript function, if else, isNaN -


i need figure out i'm doing wrong, i've tried make function you're supposed enter 2 numbers in 2 different boxes , loop until put in valid number! (sorry code , english)

var x = parseint(prompt("please enter number!")); var y = parseint(prompt("please enter number!"));  function add(x, y) {      var z = x + y;     var = false;      {         if (isnan(x)) {             alert("invalid entry. please enter number!")         } else if (isnan(y)) {             alert("invalid entry. please enter number!")         } else {              alert(x + " + " + y + " = ");             = true;         }         while (i == false);     } }  add(x, y);

there couple of problems code:

  1. your while misplaced.
  2. the parameters x , y don't make sense, because user needs input them.
  3. the prompts asking numbers outside of loop.

here fixed code:

function add() {      {         var x = parseint(prompt("please enter number!"));         var y = parseint(prompt("please enter number!"));         var z = x + y;         var = false;          if (isnan(x)) {             alert("invalid entry. please enter number!")         } else if (isnan(y)) {             alert("invalid entry. please enter number!")         } else {              alert(x + " + " + y + " = " + z);             = true;         }     }     while (i == false); }  add();

Comments

Post a Comment

Popular posts from this blog

apache - Remove .php and add trailing slash in url using htaccess not loading css -

i have add following code htaccess file removing .php extension , add trailing slash urls. worked fine reduced page loading speed , css code not loading @ all. pages ugly. please help rewriteengine on rewritebase / ## hide .php extension snippet # externally redirect /dir/foo.php /dir/foo rewritecond %{the_request} ^[a-z]{3,}\s([^.]+)\.php [nc] rewriterule ^ %1/ [r,l] # add trailing slash rewritecond %{request_filename} !-f rewritecond %{request_uri} !/$ rewriterule . %{request_uri}/ [l,r=301] # internally forward /dir/foo /dir/foo.php rewritecond %{request_filename} !-d rewritecond %{request_filename}.php -f rewriterule ^(.*?)/?$ $1.php [l] we can rewrite urls using .htaccess files. before writing in .htaccess files need verify kind of server using. can check server adding a <?php phpinfo(); ?> in php page. ensure mod_rewrite module enabled in apache server. can identified checking phpinfo included page. common methods used url rewriting follows ...
Read more

javascript - jQuery show full size image on click -

pretty self explanatory not workking . i want display full image when user click on image... yes know there tons of plugins but i want keep simple. any idea ? css : .full { display: none; width: 500px; height: 500px; margin-left: 100px; margin-top: -300px; position: fixed; background-color: #f00; z-index: 6; } .thumbnail { width: 50px; height: 50px; } html: <img class="thumbnail" src="http://4.bp.blogspot.com/-uhbdp2esxng/txneptvi92i/aaaaaaaaaky/upfqis7zto0/s1600/rihanna-wallpaper.jpg"> jquery: $(document).ready(function() { $('.thumbnail').on('click', function() { var img = $('<img />',{src:this.src,'class':'full'}); $('.full').html(img).show(); console.log('done!'); }); }); try looking how jquery works. $(document).ready(function() { $('.thumbnail').on('click', function(...
Read more