In my application I am using WebView and in that I am using JavaScript alert( ) method but its not working, no pop-up appears.

in my manifest file I have added

<uses-permission android:name=android.permission.INTERNET></uses-permission>

and in activity file I have added

mWebView = (WebView) findViewById(R.id.webview);

mWebView.getSettings().setJavaScriptEnabled(true);

mWebView.loadUrl(file:///android_asset/demo.html);

In layout xml file I have added

<WebView 

    android:id=@+id/webview

    android:layout_width=fill_parent

    android:layout_height=fill_parent

/>

Any clue how to enable full JavaScript in WebView?

Update

Thanks mark

the alert() method in the html file are working now :) .

Now there are two issues in WebView :

1: I am using a <textarea> in the html file that i am loading in WebView , and trying to write in Hindi language font in it, but when i try to write Hindi text it displays as symbols ( rectangle symbols like [] ) .

when i do the same in firefox browser on desktop it works fine.
any clue how to give support for multiple language in textarea in WebView ?

2: When I am clicking submit and trying to open the value of text in alert() method in another java script it doesn't work , does it mean even after using WebChromeClient
its applicable only for current loaded html page and not javascripts called from that page ?