For example we have a 'useState' function, which takes a state and a function to update the state: const useState = (state, setState) => { const newState = setState(state); if (newState != null) { return newState; } else { return state; } }; If the n…
Based on research at Facebook, we know that if a user sees a flash of loading state, they perceive the app as being slower. So let's improve the pending experience for users with faster connections using css transitions to avoid showing the loading s…
关键字不可以作为变量名或者函数名 break case catch continue default delete do else finally for function if in instanceof new return switch this throw try typeof var void while with 保留字是为以后关键字而准备的 也不可以用来变量或者函数名. abstract boolean byte char class const debugger double e…
转自:http://www.androiddesignpatterns.com/2013/08/fragment-transaction-commit-state-loss.html The following stack trace and exception message has plagued StackOverflow ever since Honeycomb's initial release: java.lang.IllegalStateException: Can not per…
http://stackoverflow.com/questions/2628672/what-should-every-javascript-programmer-know Not jQuery. Not YUI. Not (etc. etc.) Frameworks may be useful, but they are often hiding the sometimes-ugly details of how JavaScript and the DOM actually work fr…
---------------------------------------------------------------------------------------------------- JavaScript eval() Function The eval() function evaluates or executes an argument. If the argument is an expression, eval() evaluates the expression.…
$state service in module ui.router.state Description $state service is responsible for representing states as well as transitioning between them. It also provides interfaces to ask for current state or even states you're coming from. Dependencies $ro…
This week’s JavaScript news Read this issue on the Web | Issue Archive JavaScript Weekly Issue 182May 23, 2014 Editor: Peter Cooper Featured Data-Binding Revolutions with Object.observe() — Object.observe(), part of a future ECMAScript standard, is…
