iOS - web自适应宽高（预设置的大小）

//web自适应宽高

-(void)webViewDidFinishLoad:(UIWebView *)webView

{

    NSLog(@"wessd");

    [ webView stringByEvaluatingJavaScriptFromString:@"document.body.style.zoom=0.5"];

    //    self.webViewImage.scalesPageToFit = YES;

    

}