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space.js
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space.js
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/*
* CSE 154 Section Exercise - Whack a Bug
* Handles whacking bugs.
*/
"use strict";
(function() {
window.addEventListener("load", init);
function init() {
let button = qs("button");
button.addEventListener("click", switchView);
}
function switchView(evt) {
id('planet').classList.remove("hidden");
id('earth').classList.add("hidden");
qs("body").style.backgroundImage = "url(img/planet.PNG)";
qs("body").style.backgroundSize = "100% 565%";
new Audio('echo.mp3').play();
}
/**
* Returns the element that has the ID attribute with the specified value.
* @param {string} name - element ID.
* @returns {object} - DOM object associated with id.
*/
function id(name) {
return document.getElementById(name);
}
/**
* Returns first element matching selector.
* @param {string} selector - CSS query selector.
* @returns {object} - DOM object associated selector.
*/
function qs(selector) {
return document.querySelector(selector);
}
})();