What is the best way to add options to a select from a JavaScript object with jQuery?

Question

What is the best method for adding options to a <select> from a JavaScript object using jQuery?

I'm looking for something that I don't need a plugin to do, but I would also be interested in the plugins that are out there.

This is what I did:

selectValues = { "1": "test 1", "2": "test 2" };  for (key in selectValues) {   if (typeof (selectValues[key] == 'string') {     $('#mySelect').append('<option value="' + key + '">' + selectValues[key] + '</option>');   } } 

A clean/simple solution:

This is a cleaned up and simplified version of matdumsa's:

$.each(selectValues, function(key, value) {      $('#mySelect')           .append($('<option>', { value : key })           .text(value)); }); 

Changes from matdumsa's: (1) removed the close tag for the option inside append() and (2) moved the properties/attributes into an map as the second parameter of append().

Answer 1

The same as other answers, in a jQuery fashion:

$.each(selectValues, function(key, value) {         $('#mySelect')          .append($("<option></option>")                     .attr("value", key)                     .text(value));  }); 

Answer 2

var output = [];  $.each(selectValues, function(key, value) {   output.push('<option value="'+ key +'">'+ value +'</option>'); });  $('#mySelect').html(output.join('')); 

In this way you "touch the DOM" only one time.

I'm not sure if the latest line can be converted into $('#mySelect').html(output.join('')) because I don't know jQuery internals (maybe it does some parsing in the html() method)