https://vtkosnova.org/nassets/2d15d0d2/multi_select.js?v=1780395911

1jQuery.widget( 'gc.multiSelectField', $.gc.selectField, {
2
3	build: function() {
4		this.buildValuesList();
5	},
6
7	buildValuesList: function() {
8		if ( this.field.settings.valueList )
9		{
10			var values = this.field.settings.valueList.split("\n");
11			this.inputBlock.empty();
12
13			for( i = 0; i < values.length; i++ )
14			{
15				var value = values[i];
16
17				$label = $( "<label></label>" );
18				$label.html( value );
19
20				var $option = $('<input type="checkbox" name="field-value-' + this.field.id + '">');
21				$option.attr( 'value', value );
22				$option.prependTo( $label );
23
24				$label.appendTo( this.inputBlock );
25			}
26		}
27	},
28
29	initEditor: function( settingsEl ) {
30		$.gc.abstractField.prototype.initEditor.call(this, settingsEl );
31		this.valueListInput = this.makeInputTextarea( 'valueList', Yii.t( "common", "Value list" ) );
32	},
33
34	getField: function() {
35		var result = $.gc.abstractField.prototype.getField.call(this);
36		result.settings = {};
37		result.settings.valueList = this.valueListInput.val();
38		return result;
39	},
40
41	getValue: function() {
42		var result = [];
43		this.inputBlock.find( 'input:checked').each( function( index, el ) { result.push( $(el).val() ) });
44		return result;
45	}
46
47} );