// jQuery, select all instances of .box
$(".box");
// Instead, select the first instance of .box
document.querySelector(".box");
// …or select all instances of .box
document.querySelectorAll(".box");
// with jQuery
// Hide all instances of .box
$(".box").hide();
// Without jQuery
// Loop over the array of elements to hide all instances of .box
document.querySelectorAll(".box").forEach(box => { box.style.display = "none" }
// With jQuery
// Select the first instance of .box within .container
var container = $(".container");
// Later...
container.find(".box");
// Without jQuery
// Select the first instance of .box within .container
var container = document.querySelector(".container");
// Later...
container.querySelector(".box");
// with jQuery
// Return the next, previous, and parent element of .box
$(".box").next();
$(".box").prev();
$(".box").parent();
// Without jQuery
// Return the next, previous, and parent element of .box
var box = document.querySelector(".box");
box.nextElementSibling;
box.previousElementSibling;
box.parentElement;
// With jQuery
$(".button").click(function(e) { /* handle click event */ });
$(".button").mouseenter(function(e) { /* handle click event */ });
$(document).keyup(function(e) { /* handle key up event */ });
// Without jQuery
document.querySelector(".button").addEventListener("click", (e) => { /* ... */ });
document.querySelector(".button").addEventListener("mouseenter", (e) => { /* ... */ });
document.addEventListener("keyup", (e) => { /* ... */ });
// With jQuery
// Handle click events .search-result elements,
// even when they're added to the DOM programmatically
$(".search-result").on("click", handleClick);
// Without jQuery
// Create and add an element to the DOM
var searchElement = document.createElement("div");
document.querySelector(".search-container").appendChild(searchElement);
// Add an event listener to the element
searchElement.addEventListener("click", handleClick);
// With jQuery
// Trigger myEvent on document and .box
$(document).trigger("myEvent");
$(".box").trigger("myEvent");
// Without jQuery
// Create and dispatch myEvent
document.dispatchEvent(new Event("myEvent"));
document.querySelector(".box").dispatchEvent(new Event("myEvent"));
// With jQuery
// Select .box and change text color to #000
$(".box").css("color", "#000");
// Without jQuery
// Select the first .box and change its text color to #000
document.querySelector(".box").style.color = "#000";
// With jQuery
// Pass multiple styles
$(".box").css({
"color": "#000",
"background-color": "red"
});
// Without jQuery
// Set color to #000 and background to red
var box = document.querySelector(".box");
box.style.color = "#000";
box.style.backgroundColor = "red";
// Set all styles at once (and override any existing styles)
box.style.cssText = "color: #000; background-color: red";
// With jQuery
// Hide and show and element
$(".box").hide();
$(".box").show();
// Without jQuery
// Hide and show an element by changing "display" to block and none
document.querySelector(".box").style.display = "none";
document.querySelector(".box").style.display = "block";
// With jQuery
$(document).ready(function() {
/* Do things after DOM has fully loaded */
});
// Without jQuery
// Define a convenience method and use it
var ready = (callback) => {
if (document.readyState != "loading") callback();
else document.addEventListener("DOMContentLoaded", callback);
}
ready(() => {
/* Do things after DOM has fully loaded */
});
// With jQuery
// Add, remove, and the toggle the "focus" class
$(".box").addClass("focus");
$(".box").removeClass("focus");
$(".box").toggleClass("focus");
// Without jQuery
// Add, remove, and the toggle the "focus" class
var box = document.querySelector(".box");
box.classList.add("focus");
box.classList.remove("focus");
box.classList.toggle("focus");
// Add "focus" and "highlighted" classes, and then remove them
var box = document.querySelector(".box");
box.classList.add("focus", "highlighted");
box.classList.remove("focus", "highlighted");
// Remove the "focus" class and add "blurred"
document.querySelector(".box").classList.replace("focus", "blurred");
// With jQuery
// Check if .box has a class of "focus", and do something
if ($(".box").hasClass("focus")) {
// Do something...
}
// Without jQuery
// Check if .box has a class of "focus", and do something
if (document.querySelector(".box").classList.contains("focus")) {
// Do something...
}
// With jQuery
$.ajax({
url: "data.json"
}).done(function(data) {
// ...
}).fail(function() {
// Handle error
});
// Without jQuery
fetch("data.json")
.then(data => {
// Handle data
}).catch(error => {
// Handle error
});
// Create a div & span
$("<div/>");
$("<span/>");
// Create a div and a span
document.createElement("div");
document.createElement("span");
var element = document.createElement("div");
element.textContent = "Text"
// or create a textNode and append it
var text = document.createTextNode("Text");
element.appendChild(text);
// With jQuery
// Update the text of a .button
$(".button").text("New text");
// Read the text of a .button
$(".button").text(); // Returns "New text"
// Without jQuery
// Update the text of a .button
document.querySelector(".button").textContent = "New text";
// Read the text of a .button
document.querySelector(".button").textContent; // Returns "New text"
// Create div element and append it to .container
$(".container").append($("<div/>"));
// Create a div and append it to .container
var element = document.createElement("div");
document.querySelector(".container").appendChild(element);
// Create a div
var element = document.createElement("div");
// Update its class
element.classList.add("box");
// Set its text
element.textContent = "Text inside box";
// Append the element to .container
document.querySelector(".container").appendChild(element);
