嗨,我知道这似乎是一个非常简单的问题,但我想将这个JS添加到我的WebView中:
<script type='text/javascript' src='https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.2/MathJax.js?config=default&ver=1.3.8'></script>
现在很明显我知道这是HTML,但我不知道该怎样投入&#39; evaluateJavaScript&#39;为了使用JS源代码。很抱歉,如果这不是很清楚 - 我对Swift和JS都不熟悉。谢谢!
我的快捷代码:
func webView(_ webView: WKWebView, didFinish navigation: WKNavigation!) {
self.webView.evaluateJavaScript("<script type='text/javascript' src='https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.2/MathJax.js?config=default&ver=1.3.8'></script>") { (nil, error) in
print(error)
}
}
答案 0 :(得分:1)
使用内置API WKUserScript
注入JS:
let script = """
var script = document.createElement('script');
script.src = 'https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.2/MathJax.js?config=default&ver=1.3.8';
script.type = 'text/javascript';
document.getElementsByTagName('head')[0].appendChild(script);
"""
let userScript = WKUserScript(source: script, injectionTime: .atDocumentStart, forMainFrameOnly: true)
let contentController = WKUserContentController()
contentController.addUserScript(userScript)
let webViewConfiguration = WKWebViewConfiguration()
webViewConfiguration.userContentController = contentController
let webView = WKWebView(frame: CGRect.zero, configuration: webViewConfiguration)
forMainFrameOnly:一个布尔值,指示脚本是仅应注入主框架还是注入所有框架(包括iframe)。