javascriptcore

I am trying to load a external library via JavaScriptCore Specifically I want the end result of this: <script src="fancyLibrary.js" type="text/javascript"></script> But with the syntax of this: JSContext *context = [[JSContext alloc] initWithVirtualMachine:[[JSVirtualMachine alloc] init]]; [context loadExternalJavascriptFileWithName:@"fancyLibrary.js"]; JSValue *fancyFunction = context[@"fancy"]; Is this possible at the current time? I figure I can include the external library in the app bundle and call it from there. It's a matter of loading the library into the context. You just need to use

I just discovered a new framework available in iOS7: JavaScriptCore. It looks awesome, but how can I access the runtime/context of a UIWebView ? TomSwift There is no official mechanism for this. But there are two approaches I know about to get the JSContext . I probably wouldn't use either in a shipping app. Use KVC to access internal UIWebView properties. Explained in detail in this blog post: http://blog.impathic.com/post/64171814244/true-javascript-uiwebview-integration-in-ios7 JSContext *ctx = [webView valueForKeyPath:@"documentView.webView.mainFrame.javaScriptContext"]; Add a magic method

In UIWebView, I can get JSContext through: [webView valueForKeyPath:@"documentView.webView.mainFrame.javaScriptContext"] The same way doesn't work in WKWebView and app crashes when it arrives this line of code. Is there a way to get JSContext in WKWebView? thanks in advance. You cannot obtain the context, because layout and javascript is handled on another process. Instead, add scripts to your webview configuration, and set your view controller (or another object) as the script message handler. Now, send messages from JavaScript like so: window.webkit.messageHandlers.interOp.postMessage

We have an iOS app with a UIWebView that loads YouTube iframe player to play youtube videos. After iOS 11.3 released we found that there are a lot of javascript core crashes. On Fabric crashlytics the crash stcktrace looks like this Crashed: WebThread 0 JavaScriptCore 0x18aa48298 JSC::JSLock::DropAllLocks::DropAllLocks(JSC::VM&) + 176 1 JavaScriptCore 0x18aa4826c JSC::JSLock::DropAllLocks::DropAllLocks(JSC::VM&) + 132 2 WebCore 0x18b78b794 SendDelegateMessage(NSInvocation*) + 360 3 WebKitLegacy 0x18cea7c68 CallDelegate(void (*)(), WebView*, objc_object*, objc_selector*, objc_object*, objc

I've been trying to figure out how to use JavaScriptCore in swift. I'm running into problems however when I have to deal with blocks as arguments, seems like the block is run immediately and the arguments gets the return value of the block. What am I doing wrong? Working Objective C code: JSContext* context = [[JSContext alloc] initWithVirtualMachine:[[JSVirtualMachine alloc] init]]; context[@"test"] = ^(NSString *string) { //code }; What I've tried: 1: var ctx = JSContext(virtualMachine:JSVirtualMachine()) var ctx["test"] = {(string:NSString)->() in /*code*/ } //Gives me "'JSContext' does not

How does the JavaScriptCore framework translate JavaScript objects into Objective-C objects, and vice versa? Does the bridge use the same binary protocol to communicate for both of the target languages? The Objective-C framework introduced with iOS7 does all the heavy lifting for you. You don't need to think of the objects as the same binary but interpreted differently - the framework performs a copy when converting between ObjC and Javascript. From JSValue.h: // Conversion between Objective-C and JavaScript types. // // When converting between JavaScript values and Objective-C objects a copy