var arr = ['Pascal', 'Lua', 'Ruby'];
var arr_before = $('#test-div>ul>li>span').map(function () {
return this.innerHTML;
}).get();
var final = arr.concat(arr_before).sort();
var ul = $('#test-div>ul');
$('#test-div>ul>li').remove();
for (var x of final) {
ul.append('<li><span>' + x + '</span></li>');
}
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var arr = ['Pascal', 'Lua', 'Ruby'];
var arr_before = $('#test-div>ul>li>span').map(function () {
return this.innerHTML;
}).get();
var final = arr.concat(arr_before).sort();
var ul = $('#test-div>ul');
$('#test-div>ul>li').remove();
for (var x of final) {
ul.append('<li><span>' + x + '</span></li>');
}