if statement inside a variable

var myVar = '<ul class="linksUnit">';
var myVar += '<li>Link 1</li>';
var myVar += if (myVar2 != false) {document.write("Link 2")};
var myVar += '</ul>';

var myVar  = '<ul class="linksUnit">';
myVar     += '<li>Link 1';
if (myVar2) { // note != false means true
    // insert a nested unordered list
    myVar += '<ul>';
    myVar += '<li>Link 2</li>';
    myVar += '</ul>';
}
myVar     += '</li>';
myVar     += '</ul>';