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UIWebView直接載入的H5介面，彈出 alert 往往會出現這樣的情況

這時候我們需要做的，就是自定義alert風格
直接上程式碼

@interface NSObject (JavaScriptAlert)


- (void)WebView:(UIWebView *)sender runJavaScriptAlertPanelWithMessage:(NSString *)message initiatedByFrame:(id)frame;

@end

#import "NSObject+YOAlert.h"

@implementation NSObject
 
 (JavaScriptAlert)

- (void)WebView:(UIWebView *)sender runJavaScriptAlertPanelWithMessage:(NSString *)message initiatedByFrame:(id)frame {


    UIAlertView* customAlert = [[UIAlertView alloc] initWithTitle:@""
                                                          message:message
                                                         delegate:nil
 

                                                cancelButtonTitle:@"確定"
                                                otherButtonTitles:nil];

    [customAlert show];

}

@end