我從數據庫中獲取了我的文本字段的價值，它工作得非常好。我想創建一個復選框，當單擊復選框時，來自數據庫的值將在文本字段和文本文件中清除，允許用戶輸入新值。如果未單擊復選框，則來自數據庫的值將是只讀/未修改/禁用。文本字段不允許用戶進行編輯。我正在使用此代碼：<div>Enter New Details: <input type="checkbox" id="myCheck"  onclick="myFunction()"><p id="textdis" style="display:none">Checkbox is CHECKED!</p><hr><br><label for="full_name">Full Name:</label><input class="form-control" type="text" name="full_name"  id="full_name" value="<?=$fullname;?>" readonly></div><!-- // Check Box Functionality For Enter New Address --><script>function myFunction() {var checkBox = document.getElementById("myCheck");var text = document.getElementById("textdis");if (checkBox.checked == true){ text.style.display = "block";<!-- Here I want If the checkbox is clicked allow the user to enter value in the textfield--><input class="form-control" type="text" name="full_name"  id="full_name" disabled="enabled">} else {  text.style.display = "none";<!-- Here I want If the checkbox unclicked take value from the database and don't allow user to edit the textfield--><input class="form-control" type="text" name="full_name"  id="full_name" value="<?=$fullname;?>" readonly>}}</script>單擊復選框時，文本字段不允許編輯。