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jdsimcoe/respsizes.js

Forked from tevko/respsizes.js
Created October 15, 2015 21:08
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Dev Tools Snippet to auto-calculate responsive image sizes value on window resize
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respsizes.js
/**
*
* Paste image class / identifier in IIFE parenthesis at end of function
*
* */
(function(i){"use strict";var img=document.querySelector(i),sizes=[];window.addEventListener("resize",()=>{var vw=Math.round(((img.offsetWidth*100)/window.innerWidth))+"vw",mq="(min-width: "+window.innerWidth+"px)",value=vw;vw!=="0vw"&&sizes.indexOf(vw)===-1&&(sizes.push(value),console.log(mq,vw))})})("PASTE CLASS OR IDENTIFIER HERE");
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