在 UIWebView 上加载 javascript

Question

我有一个javascript，只是想把它加载到我的UIWebView 上，不知道我做错了什么。 这是我的脚本：

<script type='text/javascript'>(function () { var done = false; var script = document.createElement('script'); script.async = true; script.type = 'text/javascript'; script.src = 'https://app.purechat.com/VisitorWidget/WidgetScript'; document.getElementsByTagName('HEAD').item(0).appendChild(script); script.onreadystatechange = script.onload = function (e) { if (!done && (!this.readyState || this.readyState == 'loaded' || this.readyState == 'complete')) { var w = new PCWidget({ c: 'ea5935c8-1f44-4172-bcd7-18d6f316ad75', f: true }); done = true; } }; })();</script>

这是我的代码：

NSString *temp =@"<script type='text/javascript'>(function () { var done = false; var script = document.createElement('script'); script.async = true; script.type = 'text/javascript'; script.src = 'https://app.purechat.com/VisitorWidget/WidgetScript'; document.getElementsByTagName('HEAD').item(0).appendChild(script); script.onreadystatechange = script.onload = function (e) { if (!done && (!this.readyState || this.readyState == 'loaded' || this.readyState == 'complete')) { var w = new PCWidget({ c: 'ea5935c8-1f44-4172-bcd7-18d6f316ad75', f: true }); done = true; } }; })();</script>";
    
[_mainWebView stringByEvaluatingJavaScriptFromString:temp];

这是我的空白webView...:(

Answer 1

您不需要在 javascript 中包含 script 标签。 stringByEvaluatingJavaScriptFromString 尝试直接在 webview 中执行给定的 javascript 字符串。

试试这个方法：

NSString *temp =@"(function () { var done = false; var script = document.createElement('script'); script.async = true; script.type = 'text/javascript'; script.src = 'https://app.purechat.com/VisitorWidget/WidgetScript'; document.getElementsByTagName('HEAD').item(0).appendChild(script); script.onreadystatechange = script.onload = function (e) { if (!done && (!this.readyState || this.readyState == 'loaded' || this.readyState == 'complete')) { var w = new PCWidget({ c: 'ea5935c8-1f44-4172-bcd7-18d6f316ad75', f: true }); done = true; } }; })();";