可在网上查阅。 您也可援引您的《目标C法典》中的“javascript”或反之亦然。
HTML data -
NSString *html = @"<html><head><title>Should be half</title></head><body>I wish the answer were just 42</body></html>";
[webView loadHTMLString:html baseURL:nil];
To evaluate javascript from ObjectiveC code -
NSString *title = [webView stringByEvaluatingJavaScriptFromString:@"document.title"];
This technique is not limited to one-liners, or accessing simple properties. Here’s an example of two lines of JavaScript code executed in order, as you would expect:
[webView stringByEvaluatingJavaScriptFromString:@"var field = document.getElementById( field_2 );" "field.value= Multiple statements - OK ;"];
You can also call JavaScript functions this way. And if you want to call a JavaScript function that does not already exist in the web page that you’re downloading, you can “inject” it yourself with this technique:
[webView stringByEvaluatingJavaScriptFromString:@"var script = document.createElement( script );"
"script.type = text/javascript ;"
"script.text = "function myFunction() { "
"var field = document.getElementById( field_3 );"
"field.value= Calling function - OK ;"
"}";"
"document.getElementsByTagName( head )[0].appendChild(script);"];
[webView stringByEvaluatingJavaScriptFromString:@"myFunction();"];
Check out - Javascript in UIWebView
