这个问题已经在这里得到了回答:Check if element is visible in DOM,但我在正确的解决方案优先选项中得到了一个错误。上面写着: Uncaught TypeError: Failed to execute 'getComputedStyle' on 'Window': parameter 1 is not of type 'Element'.
at isHidden (index.js:16)
at hidde (index.js:12)
at HTMLDocument.document.on
import React from 'react';
import ReactDOM from 'react-dom';
import {BrowserRouter} from "react-router-dom";
import * as serviceWorker from './serviceWorker';
import App from '/App';
ReactDOM.render(
<BrowserRouter>
<App/>
</BrowserRouter>
我想从父树中获取div元素的索引:
$(".row .col a").click(function() {
var e = $(this).parent();
var p = e.parent();
var i = p.index(e);
console.log([e, p, i]);
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div>
<div cla
当我用部分玉模板更新div内容时,我遇到了麻烦。删除用户的第一个ajax调用可以正常工作,div内容也会更新,但当我再次单击删除其他用户时,则不会调用ajax操作。我看不出问题在哪里。
这是我的密码
view/layout.jade
doctype html
html
head
title= title
link(rel='stylesheet', href='/stylesheets/style.css')
body
.container
block content
block footer
我有一个解析表格的JS函数:
// id contains a message id, activeRow is "this" from onClick on tr
function doSomething ( id, activeRow ) {
// AJAX calling using id as parameter
$("#searchResultTable > tbody > tr").each(function(index) {
$(this).removeClass("bold");
我正试图在我的“反应”应用程序中消除这个警告:
Warning: Each child in a list should have a unique "key" prop.
Check the render method of `SettingRadioButtonGroup`. See https://reactjs.org/link/warning-keys for more information.
at div
at SettingRadioButtonGroup (http://localhost:3000/main_window/index.js:
我的js脚本:
var today = new Date();
var dd = String(today.getDate()).padStart(2, '0');
var mm = String(today.getMonth() + 1).padStart(2, '0');
var yyyy = today.getFullYear();
today = mm + '/' + dd + '/' + yyyy;
document.getElementById("heure").innerHTML = toda