We can use RegisterArrayDeclaration() method to pass an array to javascript as shown below. First parameter will be Array Name and second parameter will be Array item.

ClientScript.RegisterArrayDeclaration("myArray", "'AAA'");
ClientScript.RegisterArrayDeclaration("myArray", "'BBB'");
ClientScript.RegisterArrayDeclaration("myArray", "'CCC'");
ClientScript.RegisterArrayDeclaration("myArray", "'DDD'");
When we use above method, array will be rendered in browser as a script shown below:

 <script type="text/javascript"> 
//<![CDATA[
var myArray =  new Array('AAA', 'BBB', 'CCC', 'DDD');
//]]>
</script>

In ASP.NET 1.1, we can call this method using Page.RegisterArrayDeclaration().