jQuery ui鼠标单击/退出时关闭

Question

大家好，我使用的是jQuery ui自动完成功能，所有功能都很好，除非被激活，并且如果用户单击“转义”或单击鼠标左键，则下拉列表将保持打开状态。

有我错过的设置吗？ 代码如下。 非常感谢！

/*** Set up multiselect drop down lists ***/
(function( $ ) {
    $.widget( "custom.combobox", {

        _create: function() {
            this.wrapper = $( "<span>" )
                .addClass( "custom-combobox" )
                .insertAfter( this.element );
            this.element.hide();
            this._createAutocomplete();
            this._createShowAllButton();
        },

        _createAutocomplete: function() {
            var selected = this.element.children( ":selected" ),
                value = selected.val() ? selected.text() : "";

            this.input = $( "<input>" )
                .appendTo( this.wrapper )
                .val( value )    
                .attr( "title", "" ) 
                .addClass( "custom-combobox-input ui-widget ui-widget-content ui-state-default ui-corner-left" )
                .autocomplete({
                    delay: 0,
                    minLength: 0,
                    source: $.proxy( this, "_source" )
                })
                .tooltip({
                    tooltipClass: "ui-state-highlight"
                })
                .on('mouseup', function() {
                    $(this).select();
                });

                $(this).blur();             

                this._on( this.input, {
                  autocompleteselect: function( event, ui ) {
                    ui.item.option.selected = true;
                    this._trigger( "select", event, {
                      item: ui.item.option
                    });
                },

                autocompletechange: "_removeIfInvalid"
            });
        },

        _createShowAllButton: function() {
            var input = this.input,
                wasOpen = false;

            $( "<a>" )
            .attr( "tabIndex", -1 )
            .attr( "title", "Show All Items" )
            .tooltip()
            .appendTo( this.wrapper )
            .button({
                icons: {
                    primary: "ui-icon-triangle-1-s"
                },
                text: false
            })
            .removeClass( "ui-corner-all" )
            .addClass( "custom-combobox-toggle ui-corner-right" )
            .mousedown(function() {
                wasOpen = input.autocomplete( "widget" ).is( ":visible" );
            })
            .click(function() {
                input.focus();
                input.blur();

                // Close if already visible
                if ( wasOpen ) { return; };

                // Pass empty string as value to search for, displaying all results
                input.autocomplete( "search", "" );
            });
        },

        _source: function( request, response ) {
            var matcher = new RegExp( $.ui.autocomplete.escapeRegex(request.term), "i" );
            response( this.element.children( "option" ).map(function() {
                var text = $( this ).text();
                if ( this.value && ( !request.term || matcher.test(text) ) )
                    return {
                        label: text,
                        value: text,
                        option: this
                    };
            }) );
        },

        _removeIfInvalid: function( event, ui ) {
            // Selected an item, nothing to do
            if ( ui.item ) {
                return;
            };

            // Search for a match (case-insensitive)
            var default_text = "";

            var value = this.input.val(),
                valueLowerCase = value.toLowerCase(),
                valid = false;

            this.element.children( "option" ).each(function() {

                if ( $( this ).val() == "default" ) {
                    default_text = $( this ).text();
                };

                if ( $( this ).text().toLowerCase() === valueLowerCase ) {
                    this.selected = valid = true;
                    return false;
                };
            });

            // Found a match, nothing to do
            if ( valid ) {
                return;
            };

            // Remove invalid value
            this.input
                .val( default_text )
                .attr( "title", value + " didn't match any item" )
                .tooltip( "open" );

            this._delay(function() {
                this.input.tooltip( "close" ).attr( "title", "" );
            }, 2500 );
            this.input.data( "ui-autocomplete" ).term = "";
        },

        _destroy: function() {
            this.wrapper.remove();
            this.element.show();
        },

        refresh: function () {
            selected = this.element.children(":selected");
            this.input.val(selected.text());
        },

        select: function (event, ui) {
            ui.item.option.selected = true;
            self._trigger("selected", event, {
                item: ui.item.option
            });
            select.trigger("change");
        },

        _change: function (event, ui) {
            if (!ui.item) {
                var matcher = new RegExp("^" + $.ui.autocomplete.escapeRegex($(this).val()) + "$", "i"),
                    valid = false;
                select.children("option").each(function () {
                    if ($(this).text().match(matcher)) {
                        this.selected = valid = true;
                        return false;
                    };
                });
                if (!valid) {
                    // remove invalid value, as it didn't match anything
                    $(this).val("");
                    select.val("");
                    input.data("autocomplete").term = "";
                    return false;
                };
            };
        }
    });
})( jQuery ); 

Answer 1

注释掉input.blur(); 在_createShowAllButton内部。

    _createShowAllButton: function() {
        var input = this.input,
            wasOpen = false;

        $( "<a>" )
        .attr( "tabIndex", -1 )
        .attr( "title", "Show All Items" )
        .tooltip()
        .appendTo( this.wrapper )
        .button({
            icons: {
                primary: "ui-icon-triangle-1-s"
            },
            text: false
        })
        .removeClass( "ui-corner-all" )
        .addClass( "custom-combobox-toggle ui-corner-right" )
        .mousedown(function() {
            wasOpen = input.autocomplete( "widget" ).is( ":visible" );
        })
        .click(function() {
            input.focus();
        //      input.blur();    <-- COMMENT THIS OUT / REMOVE

            // Close if already visible
            if ( wasOpen ) { return; };

            // Pass empty string as value to search for, displaying all results
            input.autocomplete( "search", "" );
        });
    },