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JavaScript DOM Scripting By Example Editing and Filtering Names Fix DOM Manipulation Code

MOISE MBAKOP NOUKEU
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MOISE MBAKOP NOUKEU
Front End Web Development Techdegree Student 11,807 Points
Posted by MOISE MBAKOP NOUKEU
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MOISE MBAKOP NOUKEU
Front End Web Development Techdegree Student 11,807 Points

hey guys , i have a problem with the condition to make the code in this example work , can someone help?

const laws = document.getElementsByTagName('li'); const indexText = document.getElementById('boldIndex'); const button = document.getElementById('embolden');

button.addEventListener('click', (e) => { const index = parseInt(indexText.value, 10);

for (let i = 0; i < laws.length; i += 1) {
   let law = laws[i];

   // replace 'false' with a correct test condition on the line below
   if (false) {

       law.style.fontWeight = 'bold';
   } else {
       law.style.fontWeight = 'normal';
   }
}

});

app.js 
const laws = document.getElementsByTagName('li');
const indexText = document.getElementById('boldIndex');
const button = document.getElementById('embolden');

button.addEventListener('click', (e) => {
    const index = parseInt(indexText.value, 10);

    for (let i = 0; i < laws.length; i += 1) {
       let law = laws[i];

       // replace 'false' with a correct test condition on the line below
       if (false) {

           law.style.fontWeight = 'bold';
       } else {
           law.style.fontWeight = 'normal';
       }
    }
});
index.html 
<!DOCTYPE html>
<html>
<head>
  <title>Newton's Laws</title>
</head>
<body>
  <h1>Newton's Laws of Motion</h1>
  <ul>
    <li>An object in motion tends to stay in motion, unless acted on by an outside force.</li>
    <li>Acceleration is dependent on the forces acting upon an object and the mass of the object.</li>
    <li>For every action, there is an equal and opposite reaction.</li>
  </ul>
  <input type="text" id="boldIndex">
  <button id="embolden">Embolden</button>
  <script src="app.js"></script>
</body>
</html>

1 Answer

Steven Parker
Steven Parker
231,248 Points
Steven Parker
Steven Parker
231,248 Points

The challenge has conveniently already converted the user input into a number for you in the "index" variable. You just need to replace the "false" with a comparison expression that will be "true" when the user's choice matches the index of the loop.