{"id":11453,"date":"2022-09-27T11:42:48","date_gmt":"2022-09-27T06:12:48","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-jquery-transform-animate-translation-to-pure-javascript\/"},"modified":"2022-09-27T11:42:48","modified_gmt":"2022-09-27T06:12:48","slug":"solved-jquery-transform-animate-translation-to-pure-javascript","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-jquery-transform-animate-translation-to-pure-javascript\/","title":{"rendered":"[Solved] jQuery transform animate translation to pure JavaScript"},"content":{"rendered":"

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I struggled with this problem before I posted the question, and I continued to work on it after I posted. I in fact tried the eventual solution before, but incorrectly.
\nMy CSS is a little more general then the M. Lak (sanwebcorner.com) example. I want to be able to define multiple marquees with different widths.<\/p>\n

<style type=\"text\/css\">\n.gc-marquee {\n  min-height: 28px;\n  overflow: hidden;\n  position: relative;\n}\n.gc-marquee > .gc-scrollingtext {\n  white-space: nowrap;\n  position: absolute;\n}\n<\/style>\n<\/code><\/pre>\n
For rendering the marquee I wanted the duration\/speed to be encoded, so I used a data attribute.  The text can be any number of HTML tags.<\/p>\n
  <div class=\"gc-marquee\" id=\"marq-1\" style=\"height: 80px;background-color: black;color: #dddddd;\">\n    <h3 class=\"gc-scrollingtext\" data-millisec=\"16000\" style=\"margin: 15px auto;font-weight: bold;\">Short marquee text!<\/h3>\n  <\/div>\n<\/code><\/pre>\n
Finally, the real problem is the JavaScript.  I was confused by pure CSS marquees.  I eventually understood the problem and got beyond the syntax.<\/p>\n
<script>\n  var marqueesToShowOnce = document.querySelectorAll( 'div.gc-marquee > .gc-scrollingtext' );\n  function gc_marquee_loop( gc_marquee, millisec, txtWidth, parWidth ) {\n    if( gc_marquee == undefined || gc_marquee == null || millisec < 1000 ) {\n      console.log( `gc_marquee_loop: ERROR, ${millisec} ${txtWidth} ${parWidth}` );\n      return;\n    }\n    setTimeout( function( ) {\n      gc_marquee.animate( [{ right: -txtWidth + 'px' }, { right: parWidth + 'px' }],\n        { duration: millisec } );\n      gc_marquee_loop( gc_marquee, millisec, txtWidth, parWidth );\n    }, millisec );\n  }\n  if( marqueesToShowOnce.length > 0 ) {\n    Array.prototype.forEach.call(marqueesToShowOnce, function( gc_marquee ) {\n      var millisec = parseInt( gc_marquee.dataset.millisec );\n      var txtWidth = gc_marquee.offsetWidth;\n      var parWidth = gc_marquee.parentElement.offsetWidth;\n      gc_marquee.animate( [{ right: -txtWidth + 'px' }, { right: parWidth + 'px' }],\n        { duration: millisec } );\n      gc_marquee_loop( gc_marquee, millisec, txtWidth, parWidth );\n    } );\n  }\n<\/script>\n<\/code><\/pre>\n
The marquee works quite well, and now I can avoid the overhead of jQuery and use pure JavaScript.<\/p>\n<\/p><\/div>\n
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solved jQuery transform animate translation to pure JavaScript <\/p>\n","protected":false},"excerpt":{"rendered":"
[ad_1] I struggled with this problem before I posted the question, and I continued to work on it after I posted. I in fact tried the eventual solution before, but incorrectly. My CSS is a little more general then the M. Lak (sanwebcorner.com) example. I want to be able to define multiple marquees with different … Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[320],"tags":[1346,464,333],"class_list":["post-11453","post","type-post","status-publish","format-standard","hentry","category-solved","tag-animation","tag-css","tag-javascript"],"yoast_head":"\n[Solved] jQuery transform animate translation to pure JavaScript - JassWeb<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/jassweb.com\/solved\/solved-jquery-transform-animate-translation-to-pure-javascript\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] jQuery transform animate translation to pure JavaScript - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] I struggled with this problem before I posted the question, and I continued to work on it after I posted. 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