script.js

///text to search 
function search() {
  let textToSearch = document.getElementById("text-to-search").value;
  let paragraph = document.getElementById("paragraph");
  textToSearch = textToSearch.replace(/[.*+?^${}()|[\]\\]/g, "\\$&");

  let pattern = new 
  RegExp(`\\b${textToSearch}\\b`,"gi");

  paragraph.innerHTML = paragraph.textContent.replace(pattern, match => `<mark>${match}</mark>`)
}

///sticky header  

window.onscroll = function () {myFunction()};

var header = document.getElementById("myHeader");
var sticky = header.offsetTop;

function myFunction() {
  if (window.pageYOffset > sticky) {
    header.classList.add("sticky");
  } else {
    header.classList.remove("sticky");
  }
}


//search book function in main page 
 
function searchBook() {
    var bookName = document.getElementById("text-to-search").value.toLowerCase();
    if (bookName === "the alchemist") {
      window.location.href = "alchemist.html";
    } else if (bookName === "life of pi") {
      window.location.href = "lifeofpi.html";
    }
  }