Google Closure Compiler Demo

This is a demo of the javascript minifier/compiler from Google Closure Compiler.

Type JavaScript code to optimize here:

/*!
 * This is an important comment
 * Date: 27-27
 */
 /*
This is a block comment
that would need to be removed
*/
var _var1=123;
var _var2='abc';
const _CONST1=1234;
const _CONST2=9876;
let _let1=123;
let _let2=987; // This is a line-comment that needs to be removed // and this is something else
function getElemInfo(elem) {
    var localvar1=123;
    var localvar2=345;
    let locallet1='abc';
    let locallet2='def';
    const localconst3=true;
    const localconst4=false;
    var test=locallet2.replace(/'/, 'abc');
    //if ( elem==undefined ) msg=''; // '<hr>';
    var c=99; // and / and // and //
    if ( elem==false ) {
        return 'NULL';
    }
    if ( elem==window ) {
        return 'window';
    }
    var newTx='';
    if ( elem.tagName ) {
        newTx=newTx+' tag='+elem.tagName;
    }
    if ( elem.id ) {
        newTx=newTx+' id='+elem.id;
    }
    if ( elem.className ) {
        newTx=newTx+' class='+elem.className;
    }
    if ( localconst3 ) console.log('localconst3=true');
    else console.log('localconst3=false');
    if ( 1==2 ) console.log('1==2');
    else {
        console.log(`1<>2`);
    }
    doSomething('Lorem Ipsum // Delor */');
    doSomething(\"Lorem \\\"Ipsum\\\" // Delor */\");

let myPet = 'seahorse';
    console.log('My favorite animal is the \${myPet};.');

return newTx;
}