data(“ url”)返回未定义
> C:\Users\erik\AppData\Local\Android\Sdk\tools\bin\sdkmanager.bat --licenses
$(document).ready(() => {
$(".removeBtn").click((e) => {
var $data_url = $(this).data("url");
console.log($data_url); //It return undefined
Swal.fire({
title: 'Are you sure?',
text: "You won't be able to revert this!",
type: 'warning',
showCancelButton: true,
confirmButtonColor: '#3085d6',
cancelButtonColor: '#d33',
confirmButtonText: 'Yes, delete it!'
}).then((result) => {
if (result.value) {
window.location.href = $data_url;
}
})
})
})
答案 0 :(得分:0)
显然this
并未引用您认为的元素。
(这归因于箭头功能,其作用域不为this
)
相反,您应该在此处使用e.target
来获取被点击的元素
$(document).ready(() =>{ $(".removeBtn").click((e) =>{
var $data_url = $(e.target).data("url");
console.log($data_url); //It return undefined
})
})
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<button data-url="something" class="btn btn-outline btn-danger removeBtn">Remove</button>
注意:data-url
的值是“ something ”,因此此代码段只会打印例如“ 某物”到控制台