JavaScript_basic/six.html at main · deepeshahirwar/JavaScript_basic · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>DOM by Hitesh sir </title>
</head>
<body style="background: #212121; color:#fff;">
    <ul class="language">
        <li>JavaScript</li>
    </ul>

</body>

<script>
function addLanguage(langName){
    // new element are created
const li = document.createElement('li');
li.innerHTML = `${langName}`;
document.querySelector('.language').appendChild(li)


}
addLanguage("python");
addLanguage("java");

function addOptiLanguage(langName){
    // new element are created in optimal way
const li = document.createElement('li');
li.appendChild(document.createTextNode(langName))
document.querySelector('.language').appendChild(li)

}
addOptiLanguage('golang');
// addOptiLanguage('typescript');
// addOptiLanguage('Rust');

//Edit
const secondLage = document.querySelector("li:nth-child(2)");
//secondLage.innerHTML="c++"
const newli = document.createElement('li');
newli.textContent ="c++";
secondLage.replaceWith(newli);

//edit
const firstLang = document.querySelector("li:first-child");
firstLang.outerHTML = '<li>Typescript</li>';

//remove
const lastLang = document.querySelector('li:last-child')
lastLang.remove(); // golang is removed
</script>
</html>