MatthiasMullie

This is a demonstration of the javascript minifier using MatthiasMullie class

Input javascript:

/*!
 * 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;
}

Output:


/*!
 * This is an important comment
 * Date: 27-27
 */
var _var1=123;var _var2='abc';const _CONST1=1234;const _CONST2=9876;let _let1=123;let _let2=987;function getElemInfo(elem){var localvar1=123;var localvar2=345;let locallet1='abc';let locallet2='def';const localconst3=!0;const localconst4=!1;var test=locallet2.replace(/'/,'abc');var c=99;if(elem==!1){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}

Minify time: 0.0067 seconds; 872 bytes 65.03% of original size (from 1341 bytes).