using vue-video-player for video playback requires playlist function. It is found that there are playlist and playlist-ui modules in the plugin of videojs, so try to introduce: directly into the playback component. has tried to load globally in mai...
command + option + L could you tell me how to make it recognize the symbol = >? Thank you. ...
var x = 1; function foo(x, y = function() { x = 2; }) { var x = 3; y(); console.log(x); } foo() 3 x 1 the above is the penultimate example of the scope of the function in the book introduction to es6 written by teacher Ruan Yifeng . Teache...
in a vue template referenced by a rails project, when reading the code to find data, it is found that there is a data that comes from this export const activeFile = state => state.openFiles.find(file => file.active) || null; I don t understand ...
objA = { "D ": { "title ": "D ", "val ": 1, "unit ": "bar "}, "C ": { "title ": "C ", "val ": 1, "unit ": "bar "}, "B ": { "title ": "B ", "val ": 1, "unit ": "bar "}, "Group A ": { "title ": "A " "upper right earth pressure ": { "...
the hair hair doctor, the Master Satan, flew over the place on time ...
JS has improved variables and functions. Online data say that this stage is precompilation preprocessing preinterpretation, but JS is an explanatory language. Is it appropriate to say "precompilation " ? ...
let first = { a: 1 , b: 2 }, second = { b: 3 , c: 4 }; let third = { ...first, ...second }; console.log(third); Code as above, run the instruction: babel-node js.js, and the error message is as follows: what went wrong? ...
there is such a requirement: < div id= "demo " > < div > This element appears when the page enters, then disappears after 5 seconds, appears after an interval of 8 seconds, and disappears again after 5 seconds, repeating this process. my idea is ...
I have several asynchronous function operations, but I want these asynchronous operations to be performed sequentially, I want to use queues, and each function needs to pass parameters. I think of the middleware of koa2, but how do I implement it? Or is ...
get prop() { return this.list } set prop(pm = {}) { ReqApi.get({ url: Urls.GET_ENQUIRYLIST, pm }) .then(res => { this.list = res.list }) } this doesn t seem to work! ...
such as the title. If you implement ES6 built-in feature Set, without using other es6 API (such as Map) if you want to write a Set that class imitates, should the underlying data structure use array or Object? ...
recently working on vue-based mobile projects, need to use a rich text editor, need some simple functions, text editing, pictures, videos, etc., to find a qeditor on the Internet. (this is a js file that depends on jquery) I try to cancel iife (self-...
first give an example:: const testFun = () = > { let testParams const sonFun = () => { testParams = 3 } console.log(testParams) } how can I console the value of testParams if I write it like this? ...
task taskstatusstatus websocketstatus: now I just want to insert the following column of data into the previous data according to their id match and display it as a column of the table. I don t know if any god has any good solution, but my concubine...
var x = 1; function foo(x, y = function() { x = 2; }) { var x = 3; y(); console.log(x); } foo() 3 x 1 if the function assigned by y is externally defined, why is the last global x 1 ; why does, foo () print 3 if the function assigned by...
In the js template engine, where does the data come from and how the page does not have the variable isAdmin? you can refer to directly. < script id= "content " type= "text html " > {{if isAdmin}} <h1>{{title}}< h1> <ul> ...
using css moudules, I encountered the problem of requiring multiple css classes as follows <div className={this.state.showall?...[style.TopBannerBox,style.actAll]:style.TopBannerBox}> can t you use it this way? This makes the report wrong. ...
var str = "abc-a,add-a,ccc-b,ccc-d,abc-a,abc-b,abc-f,tbg-g "; convert the above string to the following array form: var arr = [ {"name" : "abc", "nameIdx":[{"site" : "a"}]}, {"name"...
what if the decryption string using jsencrypt is too long and the decryption content is solved by Null? address jsencrypt: https: github.com travist js. website has found some but can not use many incomplete to solve this problem. import JSEncrypt ...
72 public static function ERROR($msg) 73 { 74 $debugInfo = debug_backtrace(); 75 $stack = "["; 76 foreach($debugInfo as $key => $val){ 77 if(array_key_exists("file", $val)){ 78 $...
as shown in the figure, I need to set height, according to the window size according to the percentage, but I find that the unit given to% percentage is useless and will automatically become px,. For example, when I set 80%, the page parses to 80px . ...
when checked, I want to pass the row data item, and insert the uid in the item into the array selectedId according to the value of the value after the CheckBox update. there is only one default callback parameter in the official document. I want to pas...
function preprocess(imageData) { const { width, height, data } = imageData; const dataTensor = ndarray(new Float32Array(data), [width, height, 4]) const dataProcessedTensor = ndarra...
can JVM handle deadlocks in the same way as database transactions? If not, then what is the reason? throw a brick to attract jade: the phenomenon of sequential deadlock is described in Java concurrent programming practice, and the philosopher dining...