这就是我到目前为止所尝试的，没有工作:
[self.webView stringByEvaluatingJavaScriptFromString:@"function changeBackground(color) { document.body.style.background = color;}<BODY onload="changeBackground('red');">"];
[self.webView stringByEvaluatingJavaScriptFromString:@"chageBackground(red);"];
任何想法?帮助吗?感谢
适合我:
[self.webView stringByEvaluatingJavaScriptFromString:@"document.body.style.background ='red';"];