10 examples of 'jquery multiselect dropdown get selected values' in JavaScript

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function setDropdownValues($dropdown, values, selectedValue) {
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    $dropdown.empty();
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    var optionsAsString = '';
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    // add an empty string to the beginning for empty selection
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    values.unshift('');
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    $.each(values, function () {
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        optionsAsString += "<option value='" + escapeHtml(this) + "'" + (selectedValue == this ? " selected='selected'" : "") + ">" + escapeHtml(this) + "</option>";
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    });
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    $dropdown.append($(optionsAsString));
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}

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getValue() {
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  const ss = this;
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  return ss.$selectEl.val();
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}

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getSelectedOption(key) {
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    return this.$refs.select2.options[this.selectedIndex()].dataset[key];
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}

286
_setSelectedValues() {
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  this.selectedItem = this.shadowRoot.querySelector("#menu").selectedItem;
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  this.selectedItemLabel = this.shadowRoot.querySelector(
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    "#menu"
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  ).selectedItemLabel;
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  this.selectedItemIndex = this.shadowRoot.querySelector("#listbox").selected;
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}

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get allSelected(): boolean {
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  return this.options && this.options.length && !this.anyUnselected;
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}

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isSelected(value) {
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    return this.findSelectionIndex(value) != -1;
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}

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getSelect2Values($selector, default_value = []) {
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  let value = jQuery($selector).select2('val');
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  if(value) {
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    return value;
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  } else {
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    return default_value;
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  }
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}

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get currentMultiselectValue() {
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  const option = this.options.options.find(
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    (opt: IListOption<number>) => this.value === opt.value,
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  );
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  if (option) return option;
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  if (this.options.allowEmpty) return null;
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  return this.options.options[0];
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}

20
selectedOptionsValues() {
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  return $.map(
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    this.props.selectedOptions,
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    (selectedOption) => selectedOption.value
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  );
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}

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private setSingleSelectedOption(option: SelectItem | undefined) {
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	const previous = this.selectedItems.length > 0 ? this.optionsMap[this.selectedItems[0].value] : undefined;
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	this.selected = option ? this.optionsMap[option.value] : undefined;
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	return previous;
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}