什么是WKWebView的WKErrorDomain错误4

所以如果我们深入研究标题:

/*! @constant WKErrorDomain Indicates a WebKit error. */
@availability(iOS, introduced=8.0)
let WKErrorDomain: String

/*! @enum WKErrorCode
 @abstract Constants used by NSError to indicate errors in the WebKit domain.
 @constant WKErrorUnkcnown                       Indicates that an unknown error occurred.
 @constant WKErrorWebContentProcessTerminated   Indicates that the Web Content process was terminated.
 @constant WKErrorWebViewInvalidated            Indicates that the WKWebView was invalidated.
 @constant WKErrorJavascriptExceptionOccurred   Indicates that a Javascript exception occurred.
 */
@availability(iOS, introduced=8.0)
enum WKErrorCode : Int {

    case Unknown
    case WebContentProcessTerminated
    case WebViewInvalidated
    case JavascriptExceptionOccurred
}

错误代码4将对应于JavascriptExceptionOccurred,或WKErrorJavascriptExceptionOccurred.

换句话说,Javascript函数会导致一些错误.

可能不会在这里你已经猜不到了.为了解决这个问题,我建议使用Safari等Web浏览器的开发人员功能,加载HTML和调试.

事实上,正如WWDC 2014视频"介绍现代WebKit API"中所述,您的桌面Safari浏览器可以" WKWebView使用Safari Web检查器检查,包括您注入的任何用户脚本".

要使用此功能,当在WKWebViewiOS模拟器上运行的应用程序中加载内存时,打开桌面Safari浏览器并访问顶部菜单栏上的Develop,然后访问iOS模拟器.这将显示Web视图的文档对象的下拉列表.

有关调试Javascript的更多信息,请查看Web Inspector:了解堆栈跟踪

所以如果我们深入研究标题:

/*! @constant WKErrorDomain Indicates a WebKit error. */
@availability(iOS, introduced=8.0)
let WKErrorDomain: String

/*! @enum WKErrorCode
 @abstract Constants used by NSError to indicate errors in the WebKit domain.
 @constant WKErrorUnkcnown                       Indicates that an unknown error occurred.
 @constant WKErrorWebContentProcessTerminated   Indicates that the Web Content process was terminated.
 @constant WKErrorWebViewInvalidated            Indicates that the WKWebView was invalidated.
 @constant WKErrorJavascriptExceptionOccurred   Indicates that a Javascript exception occurred.
 */
@availability(iOS, introduced=8.0)
enum WKErrorCode : Int {

    case Unknown
    case WebContentProcessTerminated
    case WebViewInvalidated
    case JavascriptExceptionOccurred
}

错误代码4将对应于JavascriptExceptionOccurred,或WKErrorJavascriptExceptionOccurred.

换句话说,Javascript函数会导致一些错误.

可能不会在这里你已经猜不到了.为了解决这个问题,我建议使用Safari等Web浏览器的开发人员功能,加载HTML和调试.

事实上,正如WWDC 2014视频"介绍现代WebKit API"中所述,您的桌面Safari浏览器可以" WKWebView使用Safari Web检查器检查,包括您注入的任何用户脚本".

要使用此功能,当在WKWebViewiOS模拟器上运行的应用程序中加载内存时,打开桌面Safari浏览器并访问顶部菜单栏上的Develop,然后访问iOS模拟器.这将显示Web视图的文档对象的下拉列表.

有关调试Javascript的更多信息,请查看Web Inspector:了解堆栈跟踪