WKWebView.EvaluateJavaScript Method
Definition
Important
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Overloads
| EvaluateJavaScript(NSString, WKJavascriptEvaluationResult) |
Evaluates the given JavaScript string. |
| EvaluateJavaScript(String, WKJavascriptEvaluationResult) |
Evaluates JavaScript and calls back into C# with the results. |
EvaluateJavaScript(NSString, WKJavascriptEvaluationResult)
Evaluates the given JavaScript string.
[Foundation.Export("evaluateJavaScript:completionHandler:")]
public virtual void EvaluateJavaScript (Foundation.NSString javascript, WebKit.WKJavascriptEvaluationResult completionHandler);abstract member EvaluateJavaScript : Foundation.NSString * WebKit.WKJavascriptEvaluationResult -> unit
override this.EvaluateJavaScript : Foundation.NSString * WebKit.WKJavascriptEvaluationResult -> unitParameters
- javascript
- NSString
The JavaScript string to evaluate
- completionHandler
- WKJavascriptEvaluationResult
Method to invoke when script evaluation completes or fails
This parameter can be null.
- Attributes
Remarks
The system calls completionHandler after evaluation. The arguments to the handler are an NSObject containing the results of the evaluation and an NSError if an error. If an error occurred, the result argument will be null. If no error occurred, the error argument will be null.
var config = new WKWebViewConfiguration();
var wk = new WKWebView(UIScreen.MainScreen.Bounds, config);
var js = (NSString) "document.getElementById('foo').innerHTML = 'bar'";
WKJavascriptEvaluationResult handler = (NSObject result, NSError err) => {
if(err != null)
{
System.Console.WriteLine(err);
}
if(result != null)
{
System.Console.WriteLine(result);
}
};
wk.EvaluateJavaScript(js, handler);
Applies to
EvaluateJavaScript(String, WKJavascriptEvaluationResult)
Evaluates JavaScript and calls back into C# with the results.
public void EvaluateJavaScript (string javascript, WebKit.WKJavascriptEvaluationResult completionHandler);member this.EvaluateJavaScript : string * WebKit.WKJavascriptEvaluationResult -> unitParameters
- javascript
- String
- completionHandler
- WKJavascriptEvaluationResult
Remarks
The system calls completionHandler after evaluation. The arguments to the handler are an NSObject containing the results of the evaluation and an NSError if an error. If an error occurred, the result argument will be null. If no error occurred, the error argument will be null.
var config = new WKWebViewConfiguration();
var wk = new WKWebView(UIScreen.MainScreen.Bounds, config);
var js = (NSString) "document.getElementById('foo').innerHTML = 'bar'";
WKJavascriptEvaluationResult handler = (NSObject result, NSError err) => {
if(err != null)
{
System.Console.WriteLine(err);
}
if(result != null)
{
System.Console.WriteLine(result);
}
};
wk.EvaluateJavaScript(js, handler);