来自json数组的Jquery自动完成

Question

请解决这个问题：我在外部js中有json格式数组：（不是Ajax（json）请求）

var data = [{"Id": 0,"City": "Chicago"},{"Id": 1,"City": "New York"},...]

我需要用箭头创建 Jquery 自动完成表单。 也许会是：选择芝加哥（来自外部 JS）纽约 /select，或 textarea，输入。 需要做一件事：箭头是可见的，因为用户可以用鼠标选择元素。 如何将数组附加到html页面？

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Answer 1

这里显示了所有包含输入词的项目。 检查这个小提琴。 可能会有所帮助。

 var data = [{"Id": 0,"City": "Chicago"}, {"Id": 1,"City": "New York"}, {"Id": 2,"City": "Aew York1"}, {"Id": 3,"City": "Bew York2"}] $.each(data,function(i,item){ var $option=$('<option>',{val:item.Id,text:item.City}); $('#tags').append($option); }) $.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({ classes: { "ui-tooltip": "ui-state-highlight" } }); 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" ) .on( "mousedown", function() { wasOpen = input.autocomplete("widget").is( ":visible" ); }) .on( "click", function() { input.trigger("focus"); // 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 value = this.input.val(), valueLowerCase = value.toLowerCase(), valid = false; this.element.children( "option" ).each(function() { 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( "" ).attr( "title", value + " didn't match any item" ).tooltip("open"); this.element.val( "" ); this._delay(function() { this.input.tooltip( "close" ).attr( "title", "" ); }, 2500 ); this.input.autocomplete( "instance" ).term = ""; }, _destroy: function() { this.wrapper.remove(); this.element.show(); } }); $( "#tags" ).combobox();

 .custom-combobox { position: relative; display: inline-block; } .custom-combobox-toggle { position: absolute; top: 0; bottom: 0; margin-left: -1px; padding: 0; } .custom-combobox-input { margin: 0; padding: 5px 10px; }

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <link rel="stylesheet" href="https://ajax.googleapis.com/ajax/libs/jqueryui/1.12.1/themes/smoothness/jquery-ui.css"> <script src="https://ajax.googleapis.com/ajax/libs/jqueryui/1.12.1/jquery-ui.min.js"></script> <div> <label for="tags">Tags: </label> <select id="tags"></select> </div>