vod*_*ang 0 javascript iphone objective-c uiwebview
我有一个非常奇怪的错误UIWebView,我将一个非常简单的html加载到UIWebView:
[self.webview loadHTMLString:@"<html><body><div id='hello'>hello world</div></body></html>" baseURL:nil];
然后拨打以下4行:
NSString *body = [self.webview stringByEvaluatingJavaScriptFromString:
@"document.getElementsByTagName('body')[0].outerHTML"];
NSString *helloValue = [self.webview stringByEvaluatingJavaScriptFromString:
@"document.getElementByID('hello').value"];
NSString *helloOuter = [self.webview stringByEvaluatingJavaScriptFromString:
@"document.getElementByID('hello').outerHTML"];
NSString *helloInner = [self.webview stringByEvaluatingJavaScriptFromString:
@"document.getElementByID('hello').innerHTML"];
NSString *helloElement = [self.webview stringByEvaluatingJavaScriptFromString:
@"document.getElementByID('hello')"];
只有第一行,使用getElementsByTagName返回正确的body html,所有其他行只返回一个空字符串@"".我的代码有什么问题？我怎样才能得到div那个有id的hello