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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.

            
              <div class="text-center">
  <form id="marvel-form" class="mx-auto mb-3">
    <img src="https://upload.wikimedia.org/wikipedia/commons/thumb/0/04/MarvelLogo.svg/1200px-MarvelLogo.svg.png" class="col-5 m-3">
    <div class="form-group col-5 mx-auto">
      <input type="text"
             id="search-input"
             class="form-control mr-1"
             placeholder="Type a character name"
              >
    
    <button type="submit"
            class="btn btn-danger my-3"
            >Search</button>
    </div>
  </form> 
  
  <div class="mx-auto col-6 mt-5" id="results">
  </div>
  
  <div class="mx-auto col-6 mt-5" id="errorTxt">
  </div>
</div>
            
          
!
            
              
class MARVELapi {
  constructor() {
    this.apiUrl = "https://gateway.marvel.com:443/v1/public/characters";
    this.elements = {
      form: $("#marvel-form"),
      input: $("#search-input")
    };
    this.registerEvents();
  }

  registerEvents() {
    this.elements.form.on("submit", (e) => {
      e.preventDefault();
      this.getCharacterName(this.elements.input.val().trim(), (data) => {this.callback(data)} );
    });
  }

  getCharacterName(name, callback) {
    let url = this.apiUrl;
    let params = {
      'nameStartsWith' : name ,
      'limit' : 10,
      'offset' : 0,
      'apikey' : 'ce4b9e16e225b6a487af2081d4b29dd7'
    };
    
    $.getJSON(url, params)
      .done(data => { 
        this.callback(data)
        this.showResults(data)
      })
    
      .fail(response => {
        this.callback(null)
        this.showError()
      });
  }
   
  callback(data) {
    if (typeof data !== 'undefined' ||typeof data !== null) {
      return true;
    }
    
    else if (typeof data === 'undefined' ||typeof data === null) {
      return false;
    }
  }
  
  showResults(data) {
     $('#results').removeClass('hidden')
     $('#results').html('')
     $('#errorTxt').html('')
     $('#errorTxt').addClass('hidden')
    
    data.data.results.forEach( (item) => {
     $('#results').append(`
          <div class="text-center my-5">
             <h4 class="">${item.name}</h4><br>
             <img class="col-6" src="${item.thumbnail.path}.${item.thumbnail.extension}" ><br><br>
             <h5 class="">Description :</h5>
             <p class="">${item.description}</p><br>
          </div>
     `);
    })
  }
  
  showError() {
    $('#results').addClass('hidden')
    $('#errorTxt').removeClass('hidden')
    $('#results').html('')
    
    $('#errorTxt').append('<h3>ERROR : invalid input !!</h3>')

  }
  
}  

new MARVELapi();

            
          
!
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