Voor het vereenvoudigen van client-side-scripting in html kun je gebruikmaken van jQuery. Dit is een opensource-JavaScript-library, waarvan de syntax het makkelijker maakt om door documenten te navigeren, DOM-elementen te selecteren, animaties in elkaar te zetten, events af te handelen en natuurlijk Ajax-applicaties te ontwikkelen. Daarnaast kan de functionaliteit worden uitgebreid door plug-ins te gebruiken. Voor meer informatie verwijzen we naar deze pagina. Bij deze versie 3.1.0 zijn fixes doorgevoerd die een einde moeten maken aan silent errors.
jQuery 3.1.0 Released – No More Silent Errors
Not so long ago, we released jQuery 3.0. One of the major features of jQuery 3.0 was a small rewrite of jQuery Deferreds. Specifically, we made them compatible with the Promises/A+ spec. That basically meant that errors had to be silenced and passed as rejection values to rejection handlers (added using
deferred.catch()). This had the advantage of preventing Promise handlers from getting blocked up by runtime errors, but the disadvantage of errors being silenced if no rejection handlers were added. While this was the right move for Deferreds, we had also changedjQuery.readyandjQuery.fn.readyto use the new spec-compliant Deferreds under the covers.Unfortunately, if you were using the usual ways to attach ready handlers (e.g.
jQuery(function() {})andjQuery(document).ready(function() {})), you had no way to add a rejection handler. Plus, it wasn’t obvious that you were in Deferred land. Any runtime exceptions were getting swallowed and lost in space. I think they ended up somewhere near Pluto, which isn’t even a planet anymore! There were workarounds, but this wasn’t acceptable to us.We immediately set out to fix this, and thus jQuery 3.1.0 was born. No longer will errors be silent! You will see them logged to the console by default. If you’d like to have more control on how these errors are handled, we also added an entry point:
jQuery.readyException. In most cases, you won’t need to use it, but any errors that are thrown within a ready handler will get passed to this function should you need it.jQuery.readyException = function(error) { // "error" is thrown from any ready handler };The default
jQuery.readyExceptionwill re-throw the error asynchronously, to avoid stopping execution and log the error to the console. We hope this solves any debugging issues you may have experienced when using jQuery 3.0.We do not expect this release to have any breaking changes, but if you do encounter bugs in upgrading from the previous version, please let us know.
If you’d like help upgrading from jQuery 1.x or 2.x to jQuery 3.0, please check out the 3.0 Upgrade Guide and the jQuery Migrate 1.4.1 blog post.
3.1.0 – GitHub changelog
:strip_exif()/i/2001117919.gif?f=thumbmedium)
:strip_icc():strip_exif()/u/116001/crop5db1ffa2442b3_cropped.jpeg?f=community){kind=small}