pagination.js

//Pagination logic 

var pages = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11]
//var totalPages = pages.length;
var lastPage = false;
var firstPage = false;


// a(8);
function a(n) {
    for (var i = 0; i < totalPages; i = i + 3) {
        var slice = pages.slice(i, i + 3);
        if (slice.indexOf(n) > -1) {
            return slice;
        }
    }
}
b(a(5));

function b(n) {
    var LastPages = a(pages.length);
    var startPages = a(pages[0]);

    if (n.sort().join(',') === startPages.sort().join(',')) {
        firstPage = true;
    } else if (n.sort().join(',') === LastPages.sort().join(',')) {
        lastPage = true;
    }
    var output;
    if (firstPage) {
        output = '< ' + n + '... >';
    } else if (lastPage) {
        output = '< ...' + n + ' >';
    } else {
        output = '< ...' + n + '... >';
    }
    console.log(output);
    console.log("Is first page? " + firstPage);
    console.log("Is last page? " + lastPage);
}