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Here you can Sed posuere consectetur est at lobortis. Donec ullamcorper nulla non metus auctor fringilla. Maecenas sed diam eget risus varius blandit sit amet non magna. Donec id elit non mi porta gravida at eget metus. Praesent commodo cursus magna, vel scelerisque nisl consectetur et.

            
              main
  .container
    h1 Tiny JavaScript Minifier
    p.lead Using Google's Closure Compiler service
    
    hr.my-4
    
    .row.inputs
      .col-sm-6
        h4 Plop your JavaScript Here !
        .input-group
          textarea#input.form-control
            | // ADD YOUR CODE HERE
            | function hello(name) {
            |   alert('Hello, ' + name);
            | }
            | hello('New user');
      .col-sm-6
        h4 Get your compressed code here !
        .input-group
          textarea#output.form-control
        small#stats Click the compile button to see stats !
    
    #options
      h4 You might want to specify some options... 
        a(href="https://developers.google.com/closure/compiler/docs/api-ref" target="_blank") (documentation)
        
    button#go.btn.btn-outline-primary.btn-lg.d-block Compile !
    
    hr.my-4
    
    p
      small
        | Note: not all options are included here, this is supposed to be a small web app. 
        a(href="https://closure-compiler.appspot.com/home" target="_blank") Here
        |  is a more complex one.
    
    #log
            
          
!
            
              html,
body {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
}

main {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  
  width: 100%;
  min-height: 100vh;
  
  background: #eee;
  
  .container {
    margin: auto;
    padding: 1em .8em;
    box-sizing: border-box;
    
    [class^='col-']{
      margin-bottom: 1em;
    }
    
    #input,
    #output {
      min-height: 50px;
    }
  }
  
}
            
          
!
            
              /**
 * TODO
 * add options to UI
 * link the api reference
 * auto hide advanced options (show/hide)
 * add possibility of external file
 * add compression factor
 * add log (switch to json)
 */


/**
 * XMLHTTP requests to the API
 */

function getURL(domain, params) {
  if (domain.indexOf('?') === -1) domain += '?'
  
  let keys = Object.keys(params)
  for (key of keys) {
    if (Array.isArray(params[key])) {
      for (let i=0; i<params[key].length; i++) {
        addParameter(params[key][i])
      }
    } else {
      addParameter(params[key])
    }
  }
  domain = domain.slice(0, -1)
  
  return domain
      
  function addParameter(param) {
    domain += `${key}=${encodeURIComponent(param)}&`
  }
}


function getData(url, callback) {
  let xhttp = new XMLHttpRequest()
  
  xhttp.onreadystatechange = function() {
    if (this.readyState == 4 && this.status == 200) {
      callback.call(window, xhttp.responseText)
    }
  }

  xhttp.open('POST', url)
  xhttp.withCredentials = false
  xhttp.send()
}


/**
 * UI Stuffs
 */

let DOM = {
  go: document.getElementById('go'),
  input: document.getElementById('input'),
  output: document.getElementById('output'),
  stats: document.getElementById('stats'),
  log: document.getElementById('log'),
  optionsWrapper: document.getElementById('options'),
  options: {} // Different inputs generated in addOptionsToWrapper
}

/**
 * Options initializer
 */

// Used for initalizing the options
const options = {
  // js_code: 'function hello(name){alert("Hello, "+name)}hello("New user");',
  // code_url: TEXTBOX
  compilation_level: {
    names: ['Whitespace', 'Simple', 'Advanced'],
    values: ['WHITESPACE_ONLY', 'SIMPLE_OPTIMIZATIONS', 'ADVANCED_OPTIMIZATIONS'],
    default: 'SIMPLE_OPTIMIZATIONS',
    label: 'Compilation'
  },
  // output_format: {
  //   names: ['XML', 'JSON', 'Text'],
  //   values: ['xml', 'json', 'text'],
  //   default: 'text'
  // },
  // output_info: {
  //   names: ['Compiled code', 'Warnings', 'Errors', 'Statistics'],
  //   values: ['compiled_code', 'warnings', 'errors', 'statistics'],
  //   default: 'compiled_code',
  //   label: 'Output info'
  // },
  // js_externs: TEXTBOX
  // externs_url: TEXTBOX
  // exclude_default_externs: {
  //   names: ['Yes', 'No'],
  //   values: ['true', 'false'],
  //   default: 'false',
  //   label: 'Excluse default externs'
  // },
  // output_file_name: TEXTBOX
  formatting: {
    names: ['Pretty print', 'Print input delimiter'],
    values: ['pretty_print', 'print_input_delimiter'],
    default: 'print_input_delimiter',
    label: 'Formatting'
  },
  // use_closure_library: {
  //   names: ['Yes', 'No'],
  //   values: ['true', 'false'],
  //   default: 'false',
  //   label: 'Use closure library'
  // },
  // warning_level: {
  //   names: ['Quiet', 'Default', 'Verbose'],
  //   values: ['QUIET', 'DEFAULT', 'VERBOSE'],
  //   default: 'DEFAULT',
  //   label: 'Warning level'
  // },
  language: {
    names: ['ECMAScript 3', 'ECMAScript 5', 'ECMAScript 5 strict', 'ECMAScript 6', 'ECMAScript 6 strict'],
    values: ['ECMASCRIPT3', 'ECMASCRIPT5', 'ECMASCRIPT5_STRICT', 'ECMASCRIPT6', 'ECMASCRIPT6_STRICT'],
    default: 'ECMASCRIPT6',
    label: 'Language in'
  },
  language_out: {
    names: ['ECMAScript 3', 'ECMAScript 5', 'ECMAScript 5 strict', 'ECMAScript 6', 'ECMAScript 6 strict'],
    values: ['ECMASCRIPT3', 'ECMASCRIPT5', 'ECMASCRIPT5_STRICT', 'ECMASCRIPT6', 'ECMASCRIPT6_STRICT'],
    default: 'ECMASCRIPT5',
    label: 'Language out'
  }
}


function addOptionsToWrapper(options, wrapper, domOptions) {
  let keys = Object.keys(options)
  
  let row
  for (let i=0; i<keys.length; i++) {
    if (i%2 === 0) {
      row = document.createElement('div')
      row.classList.add('row')
      wrapper.appendChild(row)
    }

    let col = document.createElement('div')
    col.classList.add('col-sm-6')

    let inputgroup = document.createElement('div')
    inputgroup.classList.add('input-group')

    let inputgroupprepend = document.createElement('div')
    inputgroupprepend.classList.add('input-group-prepend')
    let title = document.createElement('span')
    title.classList.add('input-group-text')
    title.innerHTML = options[keys[i]].label

    let select = document.createElement('select')
    select.classList.add('form-control')
    domOptions[keys[i]] = select

    let selectoptions = options[keys[i]]
    for (let j=0; j<selectoptions.names.length; j++) {
      let option = document.createElement('option')
      option.value = selectoptions.values[j]
      option.innerHTML = selectoptions.names[j]
      select.appendChild(option)
    }
    select.value = selectoptions.default

    inputgroupprepend.appendChild(title)
    inputgroup.appendChild(inputgroupprepend)
    inputgroup.appendChild(select)
    col.appendChild(inputgroup)
    row.appendChild(col)
  }
}

// I used to have more options, but removed some for simplicity sakes
// This is why I build this function
addOptionsToWrapper(options, DOM.optionsWrapper, DOM.options)


/**
 * Compiler
 */

DOM.go.onclick = function() {
  this.disabled = true
  this.innerHTML = 'Compiling...'
  
  getData(getURL('https://closure-compiler.appspot.com/compile', {
    js_code: DOM.input.value,
    compilation_level: DOM.options.compilation_level.value,
    output_format: 'json',
    output_info: ['compiled_code', 'warnings', 'errors', 'statistics'],
    // output_info: DOM.options.output_info.value,
    // exclude_default_externs: DOM.options.exclude_default_externs.value,
    formatting: DOM.options.formatting.value,
    // use_closure_library: DOM.options.use_closure_library.value,
    // warning_level: DOM.options.warning_level.value,
    language: DOM.options.language.value,
    language_out: DOM.options.language_out.value,
  }), function(data) {
    let parsed = JSON.parse(data)
    let keys = Object.keys(parsed)
    
    for (let i=0; i<keys.length; i++) {
      switch(keys[i]) {
        case 'compiledCode':
          DOM.output.innerHTML = parsed.compiledCode
          break
        case 'statistics':
          let s = parsed.statistics
          DOM.stats.innerHTML = `Compressed ${s.originalSize} bytes down to ${s.compressedSize} bytes (${Math.round((s.originalSize-s.compressedSize)/s.originalSize*100)}%) in ${s.compileTime} ms`
          break
        default:
          console.log(parsed[keys[i]])
          break
      }
    }
    
    DOM.go.disabled = false
    DOM.go.innerHTML = 'Compile !'
  })
}
            
          
!
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