littlelink/app.js

//
// Smooth scrolling when opening and closing the details element for value block
//
// Set expanded value block to a variable
const valueBlock = document.getElementById("value-expanded");
const bodyTop = document.getElementById("top");

// Watch for the details element to be toggled
document.querySelector('.value-block').addEventListener('toggle', function() {
  if (this.open) {
    // Scroll to contents of value block when it is opened
    valueBlock.scrollIntoView({ behavior: "smooth" });
  } else {
    // Scroll to top of button list when value block is closed
 }
});

//
// Copy crypto wallet addresses to clipboard when clicked
//
// Set wallet addresses to variables
const btcadd = document.getElementById("btcwall").textContent;
const ethadd = document.getElementById("ethwall").textContent;
const dogeadd = document.getElementById("dogewall").textContent;

// Watch for click on BTC wallet address
document.getElementById("btcwall").addEventListener("click", function(){
        // Copy BTC address to clipboard
        navigator.clipboard.writeText(btcadd);
        // Display alert to confirm the address was added to clipboard
        alert("BTC address copied to clipboard");
});

// Watch for click on ETH wallet address
document.getElementById("ethwall").addEventListener("click", function(){
        // Copy ETH address to clipboard
        navigator.clipboard.writeText(ethadd);
        // Display alert to confirm the address was added to clipboard
        alert("ETH address copied to clipboard");
});

// Watch for click on DOGE wallet address
document.getElementById("dogewall").addEventListener("click", function(){
        // Copy DOGE address to clipboard
        navigator.clipboard.writeText(dogeadd);
        // Display alert to confirm the address was added to clipboard
        alert("DOGE address copied to clipboard");
});

//
// Display crypto QR code when link is clicked
//
// Prevent clicks on QR codes from functioning
document.querySelector("#btc-qr-link a").addEventListener("click", function(event){
  event.preventDefault()
});
document.querySelector("#eth-qr-link a").addEventListener("click", function(event){
  event.preventDefault()
});
document.querySelector("#doge-qr-link a").addEventListener("click", function(event){
  event.preventDefault()
});

// Watch for click on BTC QR code link
document.querySelector("#btc-qr-link a").addEventListener("click", function(){
        // Hide all other QR codes
        if (document.contains(document.querySelector("#eth-js-qr"))) {
            document.querySelector("#eth-js-qr").remove();
	}
	if (document.contains(document.querySelector("#doge-js-qr"))) {
            document.querySelector("#doge-js-qr").remove();
	}
        // Display BTC QR code
        if (document.contains(document.querySelector("#btc-js-qr"))) {
            document.querySelector("#btc-js-qr").remove();
	} else {
	document.querySelector("#btcwall").insertAdjacentHTML("afterend", "<span class=\"crypto-js-qr\" id=\"btc-js-qr\"><img src=\"images/crypto/btc-qr.png\"></span>");
	document.querySelector("#btc-qr-link").scrollIntoView({ behavior: "smooth" });
	}
});

// Watch for click on ETH QR code link
document.querySelector("#eth-qr-link a").addEventListener("click", function(){
        // Hide all other QR codes
        if (document.contains(document.querySelector("#btc-js-qr"))) {
            document.querySelector("#btc-js-qr").remove();
	}
	if (document.contains(document.querySelector("#doge-js-qr"))) {
            document.querySelector("#doge-js-qr").remove();
	}
        // Display ETH QR code
        if (document.contains(document.querySelector("#eth-js-qr"))) {
            document.querySelector("#eth-js-qr").remove();
	} else {
	document.querySelector("#ethwall").insertAdjacentHTML("afterend", "<span class=\"crypto-js-qr\" id=\"eth-js-qr\"><img src=\"images/crypto/eth-qr.png\"></span>");
	document.querySelector("#eth-qr-link").scrollIntoView({ behavior: "smooth" });
	}
});

// Watch for click on DOGE QR code link
document.querySelector("#doge-qr-link a").addEventListener("click", function(){
        // Hide all other QR codes
        if (document.contains(document.querySelector("#btc-js-qr"))) {
            document.querySelector("#btc-js-qr").remove();
	}
	if (document.contains(document.querySelector("#eth-js-qr"))) {
            document.querySelector("#eth-js-qr").remove();
	}
        // Display DOGE QR code
        if (document.contains(document.querySelector("#doge-js-qr"))) {
            document.querySelector("#doge-js-qr").remove();
	} else {
	document.querySelector("#dogewall").insertAdjacentHTML("afterend", "<span class=\"crypto-js-qr\" id=\"doge-js-qr\"><img src=\"images/crypto/doge-qr.png\"></span>");
	document.querySelector("#doge-qr-link").scrollIntoView({ behavior: "smooth" });
	}
});