alert() method doesn't work in WebView #30358
Description
I use the plugin webview_flutter to load a html page below:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport"
content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no">
<title>Amaze UI 在线调试</title>
<link rel="stylesheet" href="http://cdn.amazeui.org/amazeui/2.5.0/css/amazeui.min.css"/>
</head>
<body>
<button onclick="alert(123456)">alert</button>
<script src="http://code.jquery.com/jquery-2.1.4.min.js"></script>
<script src="http://cdn.amazeui.org/amazeui/2.5.0/js/amazeui.min.js"></script>
</body>
</html>
But when I click the button "alert", the alert dialog doesn't show in Flutter. I open the html in Chrome, everything works well.
Does alert() method not support in Flutter?
output of flutter doctor -v:
[✓] Flutter (Channel beta, v1.3.8, on Mac OS X 10.13.6 17G65, locale zh-Hans-CN)
• Flutter version 1.3.8 at /Users/yumi/Library/Android/flutter
• Framework revision e5b1ed7 (4 weeks ago), 2019-03-06 14:23:37 -0800
• Engine revision f4951df
• Dart version 2.2.1 (build 2.2.1-dev.0.0 571ea80e11)
[✓] Android toolchain - develop for Android devices (Android SDK version 28.0.3)
• Android SDK at /Users/yumi/Library/Android/sdk
• Android NDK location not configured (optional; useful for native profiling
support)
• Platform android-28, build-tools 28.0.3
• ANDROID_HOME = /Users/yumi/Library/Android/sdk
• Java binary at: /Applications/Android
Studio.app/Contents/jre/jdk/Contents/Home/bin/java
• Java version OpenJDK Runtime Environment (build
1.8.0_152-release-1248-b01)
• All Android licenses accepted.
[✓] iOS toolchain - develop for iOS devices (Xcode 9.4.1)
• Xcode at /Applications/Xcode.app/Contents/Developer
• Xcode 9.4.1, Build version 9F2000
• ios-deploy 2.0.0
• CocoaPods version 1.5.3
[✓] Android Studio (version 3.3)
• Android Studio at /Applications/Android Studio.app/Contents
• Flutter plugin version 31.3.3
• Dart plugin version 182.5215
• Java version OpenJDK Runtime Environment (build
1.8.0_152-release-1248-b01)
[✓] Connected device (2 available)
• M5 Note • 621QECQP4P2HM • android-arm64 • Android 7.0 (API 24)
• VKY AL00 • WJX7N17815008179 • android-arm64 • Android 7.0 (API 24)