Example

@implementationAppDelegate- (BOOL)application:(UIApplication *)applicationdidFinishLaunchingWithOptions:(NSDictionary *)launchOptions {    [JPEnginestartEngine];NSString *sourcePath = [[NSBundlemainBundle]pathForResource:@"demo"ofType:@"js"];NSString *script = [NSStringstringWithContentsOfFile:sourcePathencoding:NSUTF8StringEncodingerror:nil];    [JPEngineevaluateScript:script];        self.window = [[UIWindowalloc]initWithFrame:[UIScreenmainScreen].bounds];    [self.windowaddSubview:[selfgenView]];    [self.windowmakeKeyAndVisible];returnYES;}- (UIView *)genView{return [[UIViewalloc]initWithFrame:CGRectMake(0,0,320,320)];}@end

// demo.jsrequire('UIView, UIColor, UILabel')defineClass('AppDelegate',{// replace the -genView methodgenView:function(){varview=self.ORIGgenView();view.setBackgroundColor(UIColor.greenColor())varlabel=UILabel.alloc().initWithFrame(view.frame());label.setText("JSPatch");label.setTextAlignment(1);view.addSubview(label);returnview;}});

Installation

CocoaPods

# Your Podfileplatform:ios,'6.0'pod'JSPatch'

Manually

Usage

Objective-C

[JPEnginestartEngine];// exec js directly[JPEngineevaluateScript:@"\ var alertView = require('UIAlertView').alloc().init();\ alertView.setTitle('Alert');\ alertView.setMessage('AlertView from js'); \ alertView.addButtonWithTitle('OK');\ alertView.show(); \"];// exec js file from network[NSURLConnectionsendAsynchronousRequest:[NSURLRequestrequestWithURL:[NSURLURLWithString:@"http://cnbang.net/test.js"]]queue:[NSOperationQueuemainQueue]completionHandler:^(NSURLResponse *response,NSData *data,NSError *connectionError) {NSString *script = [[NSStringalloc]initWithData:dataencoding:NSUTF8StringEncoding];    [JPEngineevaluateScript:script];}];// exec local js fileNSString *sourcePath = [[NSBundlemainBundle]pathForResource:@"sample"ofType:@"js"];NSString *script = [NSStringstringWithContentsOfFile:sourcePathencoding:NSUTF8StringEncodingerror:nil];[JPEngineevaluateScript:script];

JavaScript

Base Usage

//requirerequire('UIView, UIColor, UISlider, NSIndexPath')// Invoke class methodvarredColor=UIColor.redColor();// Invoke instance methodvarview=UIView.alloc().init();view.setNeedsLayout();// set proertyview.setBackgroundColor(redColor);// get propertyvarbgColor=view.backgroundColor();// multi-params method (use underline to separate)// OC：NSIndexPath *indexPath = [NSIndexPath indexPathForRow:0 inSection:1];varindexPath=NSIndexPath.indexPathForRow_inSection(0,1);// method name contains underline (use double undeline to represent)// OC: [JPObject _privateMethod];JPObject.__privateMethod()// use .toJS() to convert NSArray / NSString / NSDictionary to JS type.vararr=require('NSMutableArray').alloc().init()arr.addObject("JS")jsArr=arr.toJS()console.log(jsArr.push("Patch").join(''))//output: JSPatch// use hashes to represent struct like CGRect / CGSize / CGPoint / NSRangevarview=UIView.alloc().initWithFrame({x:20,y:20,width:100,height:100});varx=view.bounds().x;// wrap function with `block()` when passing block from JS to OC// OC Method: + (void)request:(void(^)(NSString *content, BOOL success))callbackrequire('JPObject').request(block("NSString *, BOOL",function(ctn,succ){if(succ)log(ctn)}));// GCDdispatch_after(1.0,function(){// do something})dispatch_async_main(function(){// do something})

defineClass

// OC@implementationJPTableViewController...- (void)tableView:(UITableView *)tableViewdidSelectRowAtIndexPath:(NSIndexPath *)indexPath{NSString *content = self.dataSource[[indexPathrow]];//may cause out of bound  JPViewController *ctrl = [[JPViewControlleralloc]initWithContent:content];  [self.navigationControllerpushViewController:ctrl];}- (NSArray *)dataSource{return @[@"JSPatch",@"is"];}- (void)customMethod{NSLog(@"callCustom method")}@end

// JSdefineClass("JPTableViewController", {// instance method definitions  tableView_didSelectRowAtIndexPath:function(tableView, indexPath) {    var row = indexPath.row()if (self.dataSource().count() > row) {//fix the out of bound bug here      var content = self.dataSource().objectAtIndex(row);      var ctrl = JPViewController.alloc().initWithContent(content);      self.navigationController().pushViewController(ctrl);    }  },  dataSource:function() {// get the original method by adding prefix 'ORIG'    var data = self.ORIGdataSource().toJS();return data.push('Good!');  }}, {})

Extensions

@implementationAppDelegate- (BOOL)application:(UIApplication *)applicationdidFinishLaunchingWithOptions:(NSDictionary *)launchOptions {    [JPEnginestartEngine];//add extensions after startEngine    [JPEngineaddExtensions:@[@"JPInclude",@"JPCGTransform"]];NSString *sourcePath = [[NSBundlemainBundle]pathForResource:@"demo"ofType:@"js"];NSString *script = [NSStringstringWithContentsOfFile:sourcePathencoding:NSUTF8StringEncodingerror:nil];    [JPEngineevaluateScript:script];}@end

include('test.js')//include function provide by JPInclude.mvarview=require('UIView').alloc().init()//CGAffineTransform is supported in JPCGTransform.mview.setTransform({a:1,b:0,c:0,d:1,tx:0,ty:100})

require('JPEngine').addExtensions(['JPInclude','JPCGTransform'])// `include()` and `CGAffineTransform` is avaliable now.

Enviroment