Js_from_zero/day_15_dom3.html at main · Manisha1998-singh/Js_from_zero · 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>Document</title>
  </head>
  <body style="background-color: #000; color: #fff">
    <ul class="language">
      <li>java</li>
    </ul>
  </body>
  <script>
    //below way orf append is good way but0 it render from the start to add the li in the end which is not the good way it
    //it make our application slow

    function addLang(langName) {
      const li = document.createElement("li");
      li.innerHTML = `${langName}`;
      document.querySelector(".language").appendChild(li);
    }
    addLang("c");
    addLang("c++");
    addLang("js");

    //better way
    function addOptiLangName(langName) {
      const li = document.createElement("li");
      li.appendChild(document.createTextNode(langName));
      document.querySelector(".language").appendChild(li);
    }
    addOptiLangName("goinggg");

    //Edit way

    const secLangName = document.querySelector("li:last-child");
    const li = document.createElement("li");
    li.textContent = "Mojo";
    secLangName.replaceWith(li);

    //other way Edit way
    const firstLangName = document.querySelector("li:first-child");
    firstLangName.outerHTML = "<li>TypeScript</li>";

    //Remove way
    const lastlandName = document.querySelector("li:last-child");
    lastlandName.remove();
  </script>
</html>