在没有JQuery的情况下实现onclick事件

Question

I have a bit of JQuery in my app that adds a click event to a class. The click event just removes a class on the parent element.

$(function(){
  $(".flash .close").on("click", function(){
    $(this).parent().removeClass("active");
  })
});

This is the only use of JQuery in my entire application, so I'd love to re-write this snippet without JQuery so I can eliminate that as a dependency all together.

However, I'm not sure where to begin in terms of implementing this click even in native javascript. I don't know much about JavaScript and the little that I do know involves frameworks like JQuery and React.

Thanks!

Answer 1

Try with querySelectorAll for select the element.Then classList.remove() use for remove the class name of the parentElement .

 window.onload=function(){ document.querySelectorAll(".flash , .close").forEach(function(a){ a.addEventListener("click", function(){ this.parentElement.classList.remove("active"); }) }) } 

 .active{ color:red; } 

 <div class="active"> <a class="flash">hi</a> </div> 

Answer 2

您可以从下面的参考资料中获取学习角度的参考：https://www.w3schools.com/js/js_htmldom_eventlistener.asp

Answer 3

Try this fiddle https://jsfiddle.net/z6uopyhy/1/

var flashCloseButton = document.getElementsByClassName('close');

for(var i = 0; i < flashCloseButton.length; i++){
     flashCloseButton[i].addEventListener("click", function(e) {
                    this.parentElement.classList.remove("active");
     });
}