Contents
When to call the executequeryasync method in SP?
A function or a delegate of the method to call if the request executes successfully. A function or a delegate of the method to call if the request fails to execute. The executeQueryAsync method is inherited from the SP.ClientRuntimeContext object.
How does the executequeryasync work in JavaScript?
Each sets up a JQuery Deferred object and returns it’s Promise. The Promise causes the calling function to sit and wait until the Promise is either resolved or rejected (in the success or failure callbacks of ExecuteQueryAsync respectively). You can do a lot more with promises, this barely scratches the surface.
What does a non-blocking executequeryasync call do?
The executeQueryAsync call is non-blocking. That means it will pause there just long enough to get the query started before continuing with the rest of your code. You can register a success and a failure callback to handle the result of the query.
What should I do after passing parameters in executequeryasync?
After passing parameters: This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL) Experienced software professional with 7 years+ on Microsoft Technology.
What’s the difference between failedcallback and succeeded callback?
SP.ClientContext.executeQueryAsync ( succeededCallback , failedCallback ) So in both your examples you are referencing a function (callback) as parameter. The only difference being the declaration of the function. you create a (anonymous) Success function callback (expression) which can not be (re)used by any other code.
Can you force XMLHttpRequest to be synchronous?
You can actually force the XMLHttpRequest to be synchronous, although that is beside the point. This is the closest I’ve found to returning a variable reference for the logged-on user. Try it out it’s simple to test: 1. In IE browse to your SharePoint site, open developer tools press (f12) 2. Open the Console press (ctl + 2) 3.
How are callbacks and delegate used in Java?
The question is about callbacks and delegate. In the first code there are two distinct functions, success and fail, something I’ve always used, but the second code is different. and the second code doesn’t appear to use callbacks for the success, instead the success is wrapped in the parent function.
How to create a seperate function in JavaScript?
you have declared seperate functions, so you could use that function (declaration) for other calls as well. Function.createDelegate. Is (old, never a official standard) JavaScript code to bind the outer function this context to your function, it is supported in all browsers. .bind(this) is standard ES5 JavaScript code.