I want to pass JSON data to javascript function related to web view. But I am unable to get the response data from the Javascript function
Objective-c
- (void)runJavaScriptCallback:(NSString *) jsonString { NSString *exec_template = @"downloadComplete(\'%@\');"; NSString *exec = [NSString stringWithFormat:exec_template, jsonString]; [webView evaluateJavaScript:exec completionHandler:nil];}Swift 4
func runJavaScriptCallback(jsonString: String) { webView.evaluateJavaScript("downloadComplete(\(jsonString))") { result, error in guard error == nil else { print(error) return } }}Javascript
var downloadComplete = (bridgeMsg) => { // escape newline character from iOS sdp bridgeMsg = bridgeMsg.replace(/\r?\n|\r/g, '\\r\\n'); const msg = JSON.parse(bridgeMsg); // do whatever you want with the parsed json object};