Top Most How do I pass some servlet variable to javascript

I embedded the javascript code in the servlet such as:

out.println("<scriptlanguage=\"JavaScript\" >");

out.println("<!-- hide from old browser...");

I have an array in servlet that need to be copied to a new array in the javascript, how do I do that?

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Normally, the result of servlet is an HTML page, which might contain JavaScript.

So you can not copy contents of servlet variable to javascript variable directlylike in following code

for(int i=0; i<strAlpha.length;i++){

     letterArray[i]=strAlpha[i];

}

Servlets are executed at server while javascript is executed at client browser.

The following code is actually creating javascript code which is then executed at client browser.

out.print("var letterArray = new Array(");

Boolean isFirst = true;

//Iterator through Array

for (int i=0; i < strAlpha.length; i++){

        if (!isFirst){

               out.print(",");            <== Semi colon added

        }

        isFirst = false;

        out.print("'" + strAlpha[i] + "'"); <==  Single quote and Semi colon added

}

out.println(");");

If you see HTML source code, you will see following lines :

var letterArray = new Array('A','B','C','D','E','F','G','H','I');