JavaScript调用oc函数，与uiwebview互动

JavaScript调用oc函数，与uiwebview互动

项目》Build Phases》Link Binary With Libraries

添加JavaScriptCore.framework的引用

如图所示：

#import <JavaScriptCore/JavaScriptCore.h>

在uiwebview的加载完成事件中添加jscontext的定义

- (void)webViewDidFinishLoad:(UIWebView *)_webView

JSContext *context =[webView valueForKeyPath:@"documentView.webView.mainFrame.javaScriptContext"];

context[@"tianyan"] = ^() {

   NSLog(@"+++++++Begin Log+++++++");

   NSArray *args = [JSContext currentArguments];

   for (JSValue *jsVal in args) {

      NSLog(@"%@", jsVal);

   }

   JSValue *this = [JSContext currentThis];

   NSLog(@"this: %@",this);

   NSLog(@"-------End Log-------");

};

//[context evaluateScript:@"log('ider', [7, 21], { hello:'world', js:100 });”];

JSContext *context2 = [webView valueForKeyPath:@"documentView.webView.mainFrame.javaScriptContext"];

context2[@“login"] = ^(int n) {

   NSLog(@“参数是：%d”,n);

};

网页内容：

<a href="javascript:tianyan();”> 点击调用</a>

<a href="javascript:login(123);">点击调用带参数</a>