Knockout v3 now checks for strict equality when comparing model values and element values for the checked binding. If you previously solved this by manually HTML-encoding strings before supplying them to optionsCaption, you’ll need to remove that logic otherwise the string will be double-encoded. Knockout v3 now does HTML-encode optionsCaption values for display, making it consistent with the text binding which has always done so. This was very inconvenient for developers who needed to display untrusted user-provided values, and was a security issue for developers who didn’t notice it. In v2.x, optionsCaption did not HTML-encode its value. optionsCaption now HTML-encodes its output
#HOW TO UPGRADE PHOTOSHOP ELEMENTS 3 UPDATE#
In this case, you will need to update your code to stop relying on the obsolete behavior.
This change will only affect you if your code relies on v2.x’s undocumented implementation detail of cross-binding dependencies.
This improves performance and eliminates a whole category of potential problems with cross-binding dependencies. Knockout v3 has a greatly improved binding mechanism that refreshes all bindings independently and only when necessary. Although this usually caused no problems, it could lead to surprising bugs in advanced scenarios with custom binding handlers. Click the arrow next to Open or Update.Click Manage. But what you might not have realised is that, in v2.x, Knockout would also re-run the visible binding even though showTerms hasn’t changed. In the list, find the app that you want to uninstall, in this case, I’m removing Photoshop CC (c19.1.7). If your viewmodel changes acceptsTerms, then of course Knockout will re-run the checked binding to update the checkbox in the UI. If you have a computed property that requires the v2.x behavior, i.e., you want repeated notifications even if the computed value is primitive and unchanged, you can enable this as follows: This makes ko.computed consistent with ko.observable, which has always suppressed notifications if you reassign the same primitive value to it. By popular demand we’ve changed the default behavior so that ko.computed does not issue “change” notifications after re-evaluation if the new value is definitely identical to the previous one (i.e., it’s a primitive - string/boolean/number/null/undefined - and equals the previous value). Many Knockout developers found this inconvenient because it caused unnecessary re-processing or duplicate actions. In Knockout v2.x, ko.computed properties would issue a “change” notification to their subscribers whenever they re-evaluated, even if the evaluation result was clearly identical to the previous one. Computed properties now notify only when their value changes
Version 3.0.0 is intended to be fully backward-compatible except for a few carefully chosen design changes that enable major new features or fix longstanding issues. If you’re using a recent v2.x build, you will typically be able to drop in Knockout v3.0.0 without having to make any changes to your application code. Knockout.js takes backward compatibility seriously. Usage with AMD using RequireJs (Asynchronous Module Definition).Overview: What components and custom elements offer.Preprocessing: Extending the binding syntax.How KO works and what benefits it brings.
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