javascript - multiple canvas as buttons with onclick event -


i'm having big problems canvas code i'm using 1 time in page (in logo) working fine, , i'm trying use buttons menu , here problem, don't know what's im doing wrong, hope of u me.

it's code i'm using logo , working fine:

html code:

<html>     <head>         <title>canvas</title>     </head>     <body>         <div id="container">             <div id="logo">                 <canvas style="" width="800" id="broken-glass"></canvas>                 <h1 style="color: rgba(250, 250, 250, 0.95);" id="logo-title">canvas</h1>             </div>             <script type="text/javascript">                 (function() {                      var iscanvassupported = function () {                         var elem = document.createelement('canvas');                         return !!(elem.getcontext && elem.getcontext('2d'));                     };                      if( iscanvassupported() ) {                         var canvas = document.getelementbyid('broken-glass'),                         context = canvas.getcontext('2d'),                         width = canvas.width = math.min(800, window.innerwidth),                         height = canvas.height,                           numtriangles = 100,                         rand = function(min, max){                             return math.floor( (math.random() * (max - min + 1) ) + min);                         };                         window.drawtriangles = function(){                             context.clearrect(0, 0, width, height);                             var hue = rand(0,360);                             var increment = 80 / numtriangles;                             for(var = 0; < numtriangles; i++) {                                  context.beginpath();                                       context.moveto(rand(0,width), rand(0,height) );                                   context.lineto(rand(0,width), rand(0,height) );                                 context.lineto(rand(0,width), rand(0,height) );                                 context.globalalpha = 0.5;                                 context.fillstyle = 'hsl('+math.round(hue)+', '+rand(15,60)+'%, '+ rand(10, 60) +'%)';                                       context.closepath();                                     context.fill();                                 hue+=increment;                                 if(hue > 360) hue = 0;                             }                             canvas.style.csstext = '-webkit-filter: contrast(115%);';                         };                         document.getelementbyid('logo-title').style.color = 'rgba(250, 250, 250, 0.95)';                         drawtriangles();                         var el = document.getelementbyid('logo');                         el.onclick = function() {                             drawtriangles();                         };                     }                 })();             </script>         </div>     </body> </html>

and it's css code:

#broken-glass {     position: absolute;     left: 0px;     top: 0px;     width: 100%; }  #logo h1 {     text-align: center;     font-weight: 700;     width: 100%;     color: #000;     position: absolute;     left: 0px;     -moz-user-select: none;     cursor: pointer;      margin-top: 27px;     font-size: 63px;     line-height: 1.4;     top: 0px;      margin-bottom: 5px;      text-rendering: optimizelegibility;      font-family: calibri,"pt sans","trebuchet ms","helvetica neue",arial; }

the big problem comes when change id's (#) classes (.) , "id" tag "class" tag in html, canvas overlapped... text of h1 tag out of canvas... , hell of problems, can tell me i'm doing wrong?, how fix it, i'm trying during hours...

too in advance!.

you may try putting !important in every code in css. example:

 text-align: center !important;  font-weight: 700 !important;

this fixed problem before, fix yours also.


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