A JSON example

时间：2022-04-11 01:20

heroes.html
<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">

    <title>Our superheroes</title>

    <link href="https://fonts.googleapis.com/css?family=Faster+One" rel="stylesheet">
    <link rel="stylesheet" href="style.css">
  </head>

  <body>

      <header>

      </header>

      <section>

      </section>

    <script>
    var header = document.querySelector(‘header‘);
    var section = document.querySelector(‘section‘);
    var requestURL = ‘https://mdn.github.io/learning-area/javascript/oojs/json/superheroes.json‘;
    var request = new XMLHttpRequest();
    request.open(‘GET‘, requestURL);
    request.responseType = ‘json‘;
    request.send();
    request.onload = function() {
      var superHeroes = request.response;
      populateHeader(superHeroes);
      showHeroes(superHeroes);
    }
    function populateHeader(jsonObj) {
      var myH1 = document.createElement(‘h1‘);
      myH1.textContent = jsonObj[‘squadName‘];
      header.appendChild(myH1);
      var myPara = document.createElement(‘p‘);
      myPara.textContent = ‘Hometown: ‘ + jsonObj[‘homeTown‘] + ‘ // Formed: ‘ + jsonObj[‘formed‘];
      header.appendChild(myPara);
    }
    function showHeroes(jsonObj) {
      var heroes = jsonObj[‘members‘];
      for(var i = 0; i < heroes.length; i++) {
        var myArticle = document.createElement(‘article‘);
        var myH2 = document.createElement(‘h2‘);
        var myPara1 = document.createElement(‘p‘);
        var myPara2 = document.createElement(‘p‘);
        var myPara3 = document.createElement(‘p‘);
        var myList = document.createElement(‘ul‘);
        myH2.textContent = heroes[i].name;
        myPara1.textContent = ‘Secret identity: ‘ + heroes[i].secretIdentity;
        myPara2.textContent = ‘Age: ‘ + heroes[i].age;
        myPara3.textContent = ‘Superpowers:‘;
        var superPowers = heroes[i].powers;
        for(var j = 0; j < superPowers.length; j++) {
          var listItem = document.createElement(‘li‘);
          listItem.textContent = superPowers[j];
          myList.appendChild(listItem);
        }
        myArticle.appendChild(myH2);
        myArticle.appendChild(myPara1);
        myArticle.appendChild(myPara2);
        myArticle.appendChild(myPara3);
        myArticle.appendChild(myList);
        section.appendChild(myArticle);
      }
    }
    </script>
  </body>
</html>

style.css
/* || general styles */

html {
  font-family: ‘helvetica neue‘, helvetica, arial, sans-serif;
}

body {
  width: 800px;
  margin: 0 auto;
}

h1, h2 {
  font-family: ‘Faster One‘, cursive;
}

/* header styles */

h1 {
  font-size: 4rem;
  text-align: center;
}

header p {
  font-size: 1.3rem;
  font-weight: bold;
  text-align: center;
}

/* section styles */

section article {
  width: 33%;
  float: left;
}

section p {
  margin: 5px 0;
}

section ul {
  margin-top: 0;
}

h2 {
  font-size: 2.5rem;
  letter-spacing: -5px;
  margin-bottom: 10px;
}

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