for example, there are several buttons below. I want to start with an event. How should I write it?
for example, there are several buttons below. I want to start with an event. How should I write it?
this is a typical event broker, which implements
by binding events to parent layer elements.//
document.getElementById('father').addEventListener('click', function (e) {
//
var event = e || window.event;
var target = event.target || event.srcElement;
// <el-button><button>
if (target.nodeName.toLocaleLowerCase === 'button') {
//
console.log('the content is: ', target.innerHTML);
}
});The horizontal coordinates of echarts are not specifically marked, and the X coordinates do not have a grid to indicate. Here is a figure that specifies . js * * createChartSix() { this.$http .get(this.$api.dataChart) .then(rsp => { ...
sincerely ask for advice: < hr > I want to use node as the background to build a video streaming server. The front end is similar to Youku VOD. It can record the playback node function, and load the progress bar at any point (starting from the c...
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is doing a question on Niuke.com. I encounter a problem: to achieve the function callIt, after the call meets the following conditions 1, the returned result is the result after calling fn 2, and the call parameter of fn is all the parameters after th...
A timing examination system is triggered if the click event is triggered within 5 seconds, and if it is not triggered, the system marks the correct answer at the end of the countdown. How to implement ...
description: a regular match is given to the content of an input box, and the matching content is the product activation code. looks like this: "0C31-0B81-BB32-3094-0C31-0B81-BB32-3094 " Code: $( -sharplicenseCode ).keyup(function () { le...
1. The custom event triggers the click event of .cpcstartrefresh, but triggers 2 click events each time 2. The code is as follows: window.onmessage = function (e) { create an event object, var myEvent = document.createEvent( Event ); m...
I configured the MIME type of the file with the amr suffix in the apache configuration as application ms-download, Why it is a garbled page when opening a file in amr format using window.open in chrome, while a file in amr format can be successfully dow...
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read a number, such as 521 change this number to 0521 but put it into four div separately, how to realize it? 0 < div > 5 < div > 2 < div > 1 < div > ...
react projects cannot save store? using redux, data index.js ReactDOM.render( <Provider store={store}> <Router > < Provider>, document.getElementById( root )) registerServiceWorker() actions export const SET_USER = ...
how to find all the NA characters in a HMLT page and replace it with "and invalid " with native JS ...
...
suppose there are only a.js and b.js (only two js and nothing else) b.js export A variable is used for a.js can you directly use import and export without using packaging and compilation tools such as webpack or babel can it be achieved with the h...
do the gods have plug-ins for uploading attachments in the mobile version that can also be uploaded more than one? ...
what does the code circled in the following picture mean? ...
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How does the code return only the result after the last asynchronous operation in the for loop is completed as shown in the figure? Please stop by and give me a hand. ...