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...
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...
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: $( -sharplicenseCode ).keyup(function () { le...
A timing examination system is triggered if the click event is triggered within 5 seconds, and if it is not triggered, the system marks the correct answer at the end of the countdown. How to implement ...
is doing a question on Niuke.com. I encounter a problem: to achieve the function callIt, after the call meets the following conditions 1, the returned result is the result after calling fn 2, and the call parameter of fn is all the parameters after th...
I would like to ask what is wrong with this code. Thank you for your answers. ...
I need to implement in a chained promise function, any function error in the middle terminates the program, and can catch the error function, and then perform different operations according to different error functions. How can the following code be imp...
sincerely ask for advice: < hr > I want to use node as the background to build a video streaming server. The front end is similar to Youku VOD. It can record the playback node function, and load the progress bar at any point (starting from the c...
The horizontal coordinates of echarts are not specifically marked, and the X coordinates do not have a grid to indicate. Here is a figure that specifies . js * * createChartSix() { this.$http .get(this.$api.dataChart) .then(rsp => { ...
problem description recently, in the project, we need to use canvas to drag and drop and zoom the picture, and to be able to draw the path on the picture, but after I drag and drop the path, I will clear the previous path . the environmental backgrou...
problem description: workerman starts normally, and the client can send and receive messages normally, but memory overflow occurs after a long connection. has also encountered a problem before. After 8 hours of normal operation of workerman, an error ...
switch the page and find that the data you filled in the form before is still there. How to refresh it? In the life cycle function to initialize? ...
how does TextInput in react-native iOS focus but the keyboard does not eject? you can call native methods to prevent the keyboard from popping up. As long as you implement it, you can ...
when the switching conditions are not met, how to prohibit tabs switching? now click tab to directly enter the next tab,. Is there any way to prevent entry ...