events - Move div with onkeydown javascript -


i trying make div move arrow keys (37 & 39) , press spacebar have div appear onkeydown , disappear onkeyup. thing is: want div continue move when press spacebar. right now, div stops moving when so.

i thought putting keys in array work, did not, have suggestion me? :)

the code has in javascript.

var keyspressed = new array(); window.onkeydown = keydownhandler; window.onkeyup = keyuphandler;  function keydownhandler(e){     var s="";     keyspressed[e.which] = true;     key = window.event.keycode;     s+=key+" activee:" + keyspressed[e.which];     updatekeys();     document.getelementbyid("movediv").innerhtml  = s; }  function keyuphandler(e){      s="";      keyspressed[e.which] = false;      key = window.event.keycode;      s+=key+" activee:" + keyspressed[e.which];      updatekeys();      document.getelementbyid("movediv").innerhtml  = s; }     var left=0;     var top = 0; function updatekeys(){     if(keyspressed[39]){         document.getelementbyid("movediv").style.left = left + 10+"px";         left += 10;     }     if(keyspressed[37]){         document.getelementbyid("movediv").style.left = left -10+"px";         left-=10;     }     if(keyspressed[32]){         document.getelementbyid("show").style.display = "block";     }     if(!keyspressed[32]){         document.getelementbyid("show").style.display = "none";     }  }

html:

<div style="position:absolute;" id="movediv"></div> <div style="position:absolute;                  left:500px;                  top:500px;                  display: none;" id="show">pressed spacebar</div>

is trying achieve?

fiddle

function updatekeys() {     if (keyspressed[0])         left -= speed;     if (keyspressed[2])         left += speed;     if (keyspressed[1])         top -= speed;     if (keyspressed[3])         top += speed;      document.getelementbyid("movediv").style.left = left + "px";     document.getelementbyid("movediv").style.top = top + "px";     if (spacepressed)         document.getelementbyid("show").style.display = "block";     else         document.getelementbyid("show").style.display = "none"; }  setinterval(updatekeys, 1);

read setinterval if not familiar it

it sets function run every said milliseconds, in case every 1 millisecond function updatekeys executed.


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

inno setup - TLabel or TNewStaticText - change .Font.Style on Focus like Cursor changes with .Cursor -

is possible change .font.style on focus tlabel or tnewstatictext happens cursor when use .cursor ? there no built-in support track mouse hovering in inno setup @ time. however, intercepting window procedure of controls can track yourself. following example need innocallback library: [setup] appname=my program appversion=1.5 defaultdirname={pf}\my program outputdir=userdocs:inno setup examples output [files] source: "innocallback.dll"; destdir: "{tmp}"; flags: dontcopy [code] #ifdef unicode #define aw "w" #else #define aw "a" #endif const gwl_wndproc = -4; wm_mousemove = $0200; type wparam = uint_ptr; lparam = longint; lresult = longint; twindowproc = function(hwnd: hwnd; umsg: uint; wparam: wparam; lparam: lparam): lresult; function setcapture(hwnd: hwnd): hwnd; external 'setcapture@user32.dll stdcall'; function releasecapture: bool; external 'releasecapture@user32.dll stdcall'; func...
Read more