// Close the dropdown if the user clicks outside of it window.onclick = function(event) { if (!event.target.matches('.dropbtn')) { var dropdowns = document.getElementsByClassName("dropdown-content"); var i; for (i = 0; i < dropdowns.length; i++) { var openDropdown = drop...
<!DOCTYPE html> <html> <head> <meta name="viewport" content="width=device-width, initial-scale=1"> <style> body {font-family: Arial, Helvetica, sans-serif;} /* The Modal (background) */ .modal { display: none; /* Hidden by default */ position: fixed; /* Stay in place ...
这是所见即所得的“实时”离线html编辑器。 它源自和 。 它用: Fontello字体 w3.css codemirror.css Codemirror.js FileSaver.js 与原始的Try It Editor v3.5的主要区别: 每次按键更新预览 移动分隔线时,它会保留其位置 可以下载预览的html 它可以在其他选项卡/窗口中显示HTML源代码 由于浏览器的原产地限制,您...
<!DOCTYPE html> <html> <title>W3.CSS</title> <meta name="viewport" content="width=device-width, initial-scale=1"> <link rel="stylesheet" href="https://www.w3schools.com/w3css/4/w3.css"> <body> <div class="w3-container"> <h2>Navigation Bar Sizes</h2> <p>Add the w3-...
<p>Click the "Try it" button to change the perspecive property of the DIV1 element:</p> <button onclick="myFunction()">Try it</button> <div id="div1">DIV1 <div id="div2">Think that you are a bird, looking down on a wall. Then click the button to see what happ...
<!DOCTYPE html> <html> <body> <h2>JavaScript addEventListener()</h2> <p>This example demonstrates how to pass parameter values when using the addEventListener() method.</p> <p>Click the button to perform a calculation.</p> <button id="myBtn">Try it</button> ...
<!DOCTYPE html> <html lang="en"> <head> <title>Bootstrap Example</title> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.4.1/css/bootstrap.min.css"> <script src...
<script> var myVar; function myFunction() { myVar = setTimeout(showPage, 3000); } function showPage() { document.getElementById("loader").style.display = "none"; document.getElementById("myDiv").style.display = "block"; } </script> </body> </html> ...
<script> async function myDisplay() { let myPromise = new Promise(function(resolve) { setTimeout(function() {resolve("I love You !!");}, 3000); }); document.getElementById("demo").innerHTML = await myPromise; } myDisplay(); </script> </body> </html> ...
<!DOCTYPE html> <html> <body> <h1>The XMLHttpRequest Object</h1> <h3>Start typing a name in the input field below:</h3> <form action=""> First name: <input type="text" id="txt1" onkeyup="showHint(this.value)"> </form> <p>Suggestions: <span id="txt...