需注意2点
1.webview添加到视图上之后,再运行注入改变背景色的js代码有效,否则无效
2.如果webview内容从服务端load,最好再次webview代理方法中viewdidfinashed里注入改变颜色的js代码,因为服务端传来的html代码可能也包含改变背景色的,可能与你写的冲突,所以在加载完服务端之后,需要在finish方法里再注入一次。
总结截图如下:
self.bottomTip = [[UIWebView alloc] initWithFrame:CGRectMake(13, ZYPscreenBounds.size.height-20-100, ZYPscreenBounds.size.width-13*2, 100)];
self.bottomTip.scrollView.scrollEnabled = NO;
[self.view addSubview:self.bottomTip];
[self.bottomTip stringByEvaluatingJavaScriptFromString:@"document.getElementsByTagName('body')[0].style.background='#F0F0F0'"];
self.bottomTip.delegate = self;
-(void)webViewDidFinishLoad:(UIWebView *)webView{
//背景色
self.bottomTip.backgroundColor = [UIColor clearColor];
[self.bottomTip stringByEvaluatingJavaScriptFromString:@"document.getElementsByTagName('body')[0].style.background='#F0F0F0'"];
}
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