Function updateOptions

docs/lib/react.js:8252–8281

* @param {ReactDOMComponent} inst * @param {boolean} multiple * @param {*} propValue A stringable (with `multiple`, a list of stringables). * @private

(inst, multiple, propValue)

 * @private
 */
function updateOptions(inst, multiple, propValue) {
  var selectedValue, i;
  var options = ReactDOMComponentTree.getNodeFromInstance(inst).options;

  if (multiple) {
    selectedValue = {};
    for (i = 0; i < propValue.length; i++) {
      selectedValue['' + propValue[i]] = true;
    }
    for (i = 0; i < options.length; i++) {
      var selected = selectedValue.hasOwnProperty(options[i].value);
      if (options[i].selected !== selected) {
        options[i].selected = selected;
      }
    }
  } else {
    // Do not set `select.value` as exact behavior isn't consistent across all
    // browsers for all cases.
    selectedValue = '' + propValue;
    for (i = 0; i < options.length; i++) {
      if (options[i].value === selectedValue) {
        options[i].selected = true;
        return;
      }
    }
    if (options.length) {
      options[0].selected = true;
    }
  }
}

/**
 * Implements a <select> native component that allows optionally setting the