July 2022

How to communicate between different goroutines? There are two options: 1. Mutex of global variables 2. Use pipeline channel to solve Because there is no lock on the global variable m, there will be a resource contention problem, and an error will occur in the code, prompting concurrent map writes var ( myMap = make(map[int]int,

There are two types of network programming: 1) TCP socket programming is the mainstream of network programming. The reason why it is called Tcp socket programming is because the bottom layer is based on the Tcp/ip protocol. For example: QQ chat 2) http programming of b/s structure, when we use the browser to access the

The leavepictureinpicture event is fired when the HTMLVideoElement leaves picture-in-picture mode successfully. This event is not cancelable and does not bubble. Syntax Use the event name in methods like addEventListener() , or set an event handler property. addEventListener ( ‘leavepictureinpicture’ … The post html video video exit picture-in-picture event leavepictureinpicture event first appeared on Lenix

Usually to make a custom drop-down box, the expanded div needs to be closed after clicking any blank area $(document).on(‘click’,function(e){ var _con = $(‘.ztree,.js_ztree’); // Set the target area (check elements that do not need to be closed when clicking) if(!_con.is(e.target)&&_con.has(e.target).length === 0){ $(‘.ztree’).hide() } }) … The post html js closing custom popup layer

document.getElementsByClassName() and document.getElementById(), you should be very familiar with the js methods of these two methods, that is, to obtain DOM elements, what is the difficulty. Today I made a mistake with these two simple methods. There is a button button on my page, please paste the structure code of the button directly, it is

video picture-in-picture (small window) < video id = “video_paly” controls src = “https://v-cdn.zjol.com.cn/280443.mp4” poster = “https://ossweb-img.qq.com/images/lol/web201310/skin/big91012.jpg” >您的浏览器不支持video 标签。 < / video > < button onClick = { ( ) => { var video : any = document . getElementById ( “video_paly” … The post video Picture-in-Picture (Small Window) first appeared on Lenix Blog . This

I ran into a problem today. Trying to add css attributes to a node through jquery to make it achieve the expected style performance. But it doesn’t work. But in another way. Invalid spelling: //这种写法不生效。 $dom.find(“p.text-p”).css(“-webkit-line-clamp”,3) ; //或$dom.find(“p.text-p”).css({“-webkit-line-clamp”:3}) ; Effective spelling: //此处这个3，可以是个变量。 $dom.find(“p.text-p”).attr(“style”, “-webkit-line-clamp:” + 3); Note that in this case, the css() method does

The method of string replacement in js: 1. Use regular expression, the syntax is [str.replace(“string to be replaced”, “new string”)]; 2. Use conventional replacement method, the syntax is [ str.replace(/string to be replaced/g, “new string”)]. Related graphic recommendation: js tutorial The method of string replacement in js: Two methods: regular & regular str.replace(“string to be