TypeScript

by ksoncan34

HTML

<div id="app"></div>

CSS

body {
  background: #20262E;
  padding: 20px;
  font-family: Helvetica;
}

#app {
  background: #fff;
  border-radius: 4px;
  padding: 20px;
  transition: all 0.2s;
  text-align: center;
}

TypeScript

function getExtension(extensions:string[], name:string):string {
	debugger;
  const ext = (name.split('.').pop() || '').toLowerCase();
  if (extensions.indexOf(ext) > -1) {
    return ext;
  }
   if (ext.indexOf('?') > -1) {
     const urlExt = (ext.split('?')[0].split('.')[0]).toLowerCase();
     if (extensions.indexOf(urlExt) > -1) {
       return urlExt;
     }
   }
  return '';
}

function greeter() {
	const result = 'File type is ' + getExtension(['jpg','png','webp'], 'https://nano-ite.alpha.storefront.com/nano_alpha/content/stockImagePortrait.jpg?v=1729648210');
  return result;
}

document.querySelector("#app").innerHTML = greeter();