在表單中單擊“下一步”時如何添加幻燈片效果？

Question

因此，請考慮以下w3schools鏈接中的表格： https : //www.w3schools.com/howto/howto_js_form_steps.asp

該表格非常基本。 我將其用作模板，以便以后可以按自己的喜好進行編輯。

如您所見，當您單擊下一步時，沒有任何作用。 我想在其中添加一個過渡（幻燈片效果），但是我不知道如何添加，添加位置和添加什么代碼。

根據網站上的代碼，您能告訴我單擊下一頁和上一頁時應添加哪些內容以制作幻燈片效果嗎？

Answer 1

您可以使用animate.css庫。 Animate.css

以下內容已添加到.tab { }

  -webkit-animation-name: fadeInUp;
  animation-name: fadeInUp;
  -webkit-animation-duration: 500ms;
  animation-duration: 500ms;

現場示例：

 var currentTab = 0; // Current tab is set to be the first tab (0) showTab(currentTab); // Display the current tab function showTab(n) { // This function will display the specified tab of the form ... var x = document.getElementsByClassName("tab"); x[n].style.display = "block"; // ... and fix the Previous/Next buttons: if (n == 0) { document.getElementById("prevBtn").style.display = "none"; } else { document.getElementById("prevBtn").style.display = "inline"; } if (n == (x.length - 1)) { document.getElementById("nextBtn").innerHTML = "Submit"; } else { document.getElementById("nextBtn").innerHTML = "Next"; } // ... and run a function that displays the correct step indicator: fixStepIndicator(n) } function nextPrev(n) { // This function will figure out which tab to display var x = document.getElementsByClassName("tab"); // Exit the function if any field in the current tab is invalid: if (n == 1 && !validateForm()) return false; // Hide the current tab: x[currentTab].style.display = "none"; // Increase or decrease the current tab by 1: currentTab = currentTab + n; // if you have reached the end of the form... : if (currentTab >= x.length) { //...the form gets submitted: document.getElementById("regForm").submit(); return false; } // Otherwise, display the correct tab: showTab(currentTab); } function validateForm() { // This function deals with validation of the form fields var x, y, i, valid = true; x = document.getElementsByClassName("tab"); y = x[currentTab].getElementsByTagName("input"); // A loop that checks every input field in the current tab: for (i = 0; i < y.length; i++) { // If a field is empty... if (y[i].value == "") { // add an "invalid" class to the field: y[i].className += " invalid"; // and set the current valid status to false: valid = false; } } // If the valid status is true, mark the step as finished and valid: if (valid) { document.getElementsByClassName("step")[currentTab].className += " finish"; } return valid; // return the valid status } function fixStepIndicator(n) { // This function removes the "active" class of all steps... var i, x = document.getElementsByClassName("step"); for (i = 0; i < x.length; i++) { x[i].className = x[i].className.replace(" active", ""); } //... and adds the "active" class to the current step: x[n].className += " active"; } 

 /* Style the form */ #regForm { background-color: #ffffff; margin: 100px auto; padding: 40px; width: 70%; min-width: 300px; } /* Style the input fields */ input { padding: 10px; width: 100%; font-size: 17px; font-family: Raleway; border: 1px solid #aaaaaa; } /* Mark input boxes that gets an error on validation: */ input.invalid { background-color: #ffdddd; } /* Hide all steps by default: */ .tab { display: none; -webkit-animation-name: fadeInUp; animation-name: fadeInUp; -webkit-animation-duration: 500ms; animation-duration: 500ms; } /* Make circles that indicate the steps of the form: */ .step { height: 15px; width: 15px; margin: 0 2px; background-color: #bbbbbb; border: none; border-radius: 50%; display: inline-block; opacity: 0.5; } /* Mark the active step: */ .step.active { opacity: 1; } /* Mark the steps that are finished and valid: */ .step.finish { background-color: #4CAF50; } @charset "UTF-8"; /*! * animate.css -http://daneden.me/animate * Version - 3.7.0 * Licensed under the MIT license - http://opensource.org/licenses/MIT * * Copyright (c) 2018 Daniel Eden */ @-webkit-keyframes fadeInUp { from { opacity: 0; -webkit-transform: translate3d(0, 100%, 0); transform: translate3d(0, 100%, 0); } to { opacity: 1; -webkit-transform: translate3d(0, 0, 0); transform: translate3d(0, 0, 0); } } @keyframes fadeInUp { from { opacity: 0; -webkit-transform: translate3d(0, 100%, 0); transform: translate3d(0, 100%, 0); } to { opacity: 1; -webkit-transform: translate3d(0, 0, 0); transform: translate3d(0, 0, 0); } } .fadeInUp { -webkit-animation-name: fadeInUp; animation-name: fadeInUp; } 

 <form id="regForm" action=""> <h1>Register:</h1> <!-- One "tab" for each step in the form: --> <div class="tab">Name: <p><input placeholder="First name..." oninput="this.className = ''"></p> <p><input placeholder="Last name..." oninput="this.className = ''"></p> </div> <div class="tab">Contact Info: <p><input placeholder="E-mail..." oninput="this.className = ''"></p> <p><input placeholder="Phone..." oninput="this.className = ''"></p> </div> <div class="tab">Birthday: <p><input placeholder="dd" oninput="this.className = ''"></p> <p><input placeholder="mm" oninput="this.className = ''"></p> <p><input placeholder="yyyy" oninput="this.className = ''"></p> </div> <div class="tab">Login Info: <p><input placeholder="Username..." oninput="this.className = ''"></p> <p><input placeholder="Password..." oninput="this.className = ''"></p> </div> <div style="overflow:auto;"> <div style="float:right;"> <button type="button" id="prevBtn" onclick="nextPrev(-1)">Previous</button> <button type="button" id="nextBtn" onclick="nextPrev(1)">Next</button> </div> </div> <!-- Circles which indicates the steps of the form: --> <div style="text-align:center;margin-top:40px;"> <span class="step"></span> <span class="step"></span> <span class="step"></span> <span class="step"></span> </div> </form>