使用JavaScript的UIWebView CSS注入 [英] UIWebView CSS injection using JavaScript
本文介绍了使用JavaScript的UIWebView CSS注入的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我试图注入一个本地css文件到一个UIWebView完成加载网站,如谷歌等。
I'm trying to inject a local css file into an UIWebView that finished loading website such as google etc.
我试图用JavaScript,但没有成功。
I'm trying with JavaScript but with no success.
- (void)webViewDidFinishLoad:(UIWebView *)webView {
NSString *cssPath = [[NSString alloc] initWithString:[[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:@"styles.css"]];
NSURL *baseURL = [NSURL fileURLWithPath:cssPath];
NSString *js = [NSString stringWithFormat:@"var fileref = document.createElement('link');
fileref.setAttribute('rel', 'stylesheet');
fileref.setAttribute('type', 'text/css');
fileref.setAttribute('href', %@);", baseURL];
[webView stringByEvaluatingJavaScriptFromString:js];
}
感谢,
推荐答案
要将JavaScript注入到Web视图中,您必须在HTML中明确写入。
To inject javascript into a web view you must explicitly write in the html.
在javascript中scrollTo函数:
An example of this is here where I wrote in a javascript scrollTo function:
- (void)webViewDidFinishLoad:(UIWebView *)webView {
[webView stringByEvaluatingJavaScriptFromString:@"var script = document.createElement('script');"
"script.type = 'text/javascript';"
"script.text = \"function myFunction() { "
"window.scrollTo(100,100)"
"}\";"
"document.getElementsByTagName('head')[0].appendChild(script);"];
[webView stringByEvaluatingJavaScriptFromString:@"myFunction();"];}
此代码将整个脚本标记和myFunction写入HTML
This code writes the entire script tags and the myFunction into the head of the HTML
这篇关于使用JavaScript的UIWebView CSS注入的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!
查看全文