JavaScript Issue No. 1: Incorrect References tothis There’s no shortage of confusion among JavaScript developers regardingJavaScript’sthiskeyword. As JavaScript coding techniques and design patterns have becom
// we start with thisasyncfunctionfoo(){constx=awaitsomething1()consty=awaitsomething2()ourCallbackFn(){// ...}}// the transformationasyncfunctionfoo(){constx=awaitsomething1()consty=awaitsomething2()awaitpromiseCallbackFn()//?}functionpromiseCallbackFn(){returnnewPromise((resolve,reject)=>...
If the host returns from a JavaScript callback without clearing the runtime from an exception state, then the JavaScript exception will be re-thrown as soon as control passes back to the JavaScript engine. This also enables host callbacks to "throw" a JavaScript exception by se...
This powerful capability allows you to apply css filter-like functions to layers to create custom visual effects to enhance the cartographic quality of your maps. This is done by applying the desired effect to the layer's effect property as a string or an array of objects to set scale ...
const path = "<path to a document>"; const readStream = createReadStream(path); const poller = await client.beginAnalyzeDocument(PrebuiltDocumentModel, readStream); // `pages`, `tables` and `styles` are also available as in the "layout" example above, but for the sake of this // ex...
Look at this example: The function above returns undefined, because we forgot to give it the second parameter age. But if we used the default parameter, it won’t return undefined, and it will use its value when we forget to assign a parameter!
Same as"round"style but without seconds. This is the default style. timeAgo.format(Date.now(),'round-minute')// 0 seconds ago → "just now"timeAgo.format(Date.now()-29*1000,'round-minute')// 29 seconds ago → "just now"timeAgo.format(Date.now()-30*1000,'round-minute')// 30 se...
Because this test does nothing, it will be reported as passing. Best practice: Don't do nothing! A test should make an assertion or use this.skip(). To skip multiple tests in this manner, use this.skip() in a "before all" hook: ...
uglify-js@3 has a simplified API and CLI that is not backwards compatible with uglify-js@2. Install First make sure you have installed the latest version of node.js (You may need to restart your computer after this step). From NPM for use as a command line app: npm install uglify-js...
Parameter spatialReference SpatialReference The spatial reference to compare to. Returns TypeDescription Boolean Returns true if the input spatial reference object has the same wkid or wkt as this spatial reference object. Example require(["esri/geometry/SpatialReference"], function(SpatialReference) { ...