转载：ios中objective-c与js的交互

 1 - (BOOL)webView:(UIWebView*)webView shouldStartLoadWithRequest: 
 2 (NSURLRequest*)request navigationType: 
 3 (UIWebViewNavigationType)navigationType //这个方法是网页中的每一个请求都会被触发的 
 4 { 
 5     NSString *urlString = [[request URL] absoluteString]; 
 6     NSArray *urlComps = [urlString 
 7 componentsSeparatedByString:@"://"]; 
 8     if([urlComps count] && [[urlComps objectAtIndex:0] 
 9 isEqualToString:@"objc"]) 
10     { 
11         NSArray *arrFucnameAndParameter = [(NSString*)[urlComps 
12 objectAtIndex:1] componentsSeparatedByString:@":/"]; 
13         NSString *funcStr = [arrFucnameAndParameter objectAtIndex:0]; 
14         if (1 == [arrFucnameAndParameter count]) 
15         { 
16             // 没有参数 
17             if([funcStr isEqualToString:@"doFunc1"]) 
18             { 
19                 /*调用本地函数1*/ 
20                 NSLog(@"doFunc1"); 
21             } 
22         } 
23         else if(2 == [arrFucnameAndParameter count]) 
24         { 
25             //有参数的 
26             if([funcStr isEqualToString:@"doFunc1"] && 
27 [arrFucnameAndParameter objectAtIndex:1]) 
28             { 
29                /*调用本地函数1*/ 
30                 NSLog(@"doFunc1:parameter"); 
31             } 
32         } 
33         return NO; 
34     }; 
35     return YES; 
36 }