将本地javascript注入UIWebView [英] Inject a local javascript into UIWebView

问题描述

有没有办法将存储在我服务器上的本地JS文件或JS文件注入UIWebView加载的任何网页？

Is there a way to inject a local JS file or a JS file that's store on my server into any web page loaded by UIWebView?

说我导航到谷歌.com在UIWebView中，它呈现该页面并运行我的JS文件（本地或我的网络服务器）？

Say I navigate to google.com in that UIWebView, it renders that page and also runs my JS file (local or on my webserver)?

推荐答案

以下代码将在本地注入javascript

The following code will inject javascript locally

- (void)injectJavascript:(NSString *)resource {
    NSString *jsPath = [[NSBundle mainBundle] pathForResource:resource ofType:@"js"];
    NSString *js = [NSString stringWithContentsOfFile:jsPath encoding:NSUTF8StringEncoding error:NULL];

    [self.webView stringByEvaluatingJavaScriptFromString:js];
}

只需在js之前传入文件名，例如

Just pass in the name of the file before the js, eg.

[self injectJavascript:@"script"];

要从您的服务器注入javascript，您可以先下载它并将其加载到Web视图中类似的方式。

To do inject javascript from your server you can download it first and load it into the web view in a similar manner.

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