我在将代码从JavaScript转换为jQuery时遇到问题。这是来自W3Schools的示例代码,用于创建下拉按钮。
// Get the button, and when the user clicks on it, execute myFunction
document.getElementById("myBtn").onclick = function() {myFunction()};
/* myFunction toggles between adding and removing the show class, which is used to hide and show the dropdown content */
function myFunction() {
document.getElementById("myDropdown").classList.toggle("show");
}
// 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 = dropdowns[i];
if (openDropdown.classList.contains('show')) {
openDropdown.classList.remove('show');
}
}
}
}
答案 0 :(得分:1)
如果您try jQuery,则代码很容易理解。
// Execute the code when the document is ready.
$(document).ready(function () {
/* myFunction toggles between adding and removing the show class, which is used to hide and show the dropdown content */
function myFunction() {
// This one removes the class "show" from the matched set of elements.
$(".dropdown-content").removeClass("show");
// This one toggles the class "show" on the matched set of elements.
$("#myDropdown").toggleClass("show");
}
// Get the button, and when the user clicks on it, execute myFunction
$("#myBtn").click(myFunction);
});
我不认为这是代码转换的问题。我坚信W3Schools已经错误地使用了重复的id
值。