我玩过：
https://github.com/experteer/autocompleteTrigger/
如下：
(function ($, window, document, undefined) {
$.widget("ui.autocompleteTrigger", {
//Options to be used as defaults
options: {
triggerStart: "%{",
triggerEnd: "}"
},
_create: function () {
this.triggered = false;
this.triggered2 = false;
this.element.autocomplete($.extend({
search: function () {
/**
* @description only make a request and suggest items if acTrigger.triggered is true
*/
var acTrigger = $(this).data("autocompleteTrigger");
if (acTrigger.triggered == true || acTrigger.triggered2 == true) {
return true;
} else {
return false;
}
},
select: function (event, ui) {
/**
* @description if a item is selected, insert the value between triggerStart and triggerEnd
*/
var acTrigger = $(this).data("autocompleteTrigger");
var text = this.value;
var trigger = acTrigger.options.triggerStart;
var trigger2 = acTrigger.options.triggerStart2;
var cursorPosition = acTrigger.getCursorPosition();
var lastTrigger1Position = text.substring(0, cursorPosition).lastIndexOf(trigger);
var lastTrigger2Position = text.substring(0, cursorPosition).lastIndexOf(trigger2);
var lastTriggerPosition;
if (lastTrigger1Position > lastTrigger2Position) {
lastTriggerPosition = lastTrigger1Position;
} else {
lastTriggerPosition = lastTrigger2Position;
}
var firstTextPart = text.substring(0, lastTriggerPosition + trigger.length) + ui.item.value +
acTrigger.options.triggerEnd;
this.value = firstTextPart + text.substring(cursorPosition, text.length);
acTrigger.triggered = false;
acTrigger.triggered2 = false;
// set cursor position after the autocompleted text
this.selectionStart = firstTextPart.length;
this.selectionEnd = firstTextPart.length;
return false;
},
focus: function () {
/**
* @description prevent to replace the hole text, if a item is hovered
*/
return false;
},
minLength: 0
}, this.options))
.bind("keyup", function (event) {
/**
* @description Bind to keyup-events to detect text changes.
* If the trigger is found before the cursor, autocomplete will be called
*/
var acTrigger = $(this).data("autocompleteTrigger");
if (event.keyCode != $.ui.keyCode.UP && event.keyCode != $.ui.keyCode.DOWN) {
var text = this.value;
var textLength = text.length;
var cursorPosition = acTrigger.getCursorPosition();
var lastString;
var query;
var lastTriggerPosition;
var lastTriggerPosition2;
var trigger = acTrigger.options.triggerStart;
var trigger2 = acTrigger.options.triggerStart2;
if (acTrigger.triggered && text != "") {
// call autocomplete with the string after the trigger
// Example: triggerStart = @, string is '@foo' -> query string is 'foo'
$(this).autocomplete("option", "source", '/UITests/LookupFirst');
lastTriggerPosition = text.substring(0, cursorPosition).lastIndexOf(trigger);
query = text.substring(lastTriggerPosition + trigger.length, cursorPosition);
$(this).autocomplete("search", query);
}
if (acTrigger.triggered2 && text != "") {
// call autocomplete with the string after the trigger
// Example: triggerStart = @, string is '@foo' -> query string is 'foo'
$(this).autocomplete("option", "source", '/UITests/LookupSec');
lastTriggerPosition2 = text.substring(0, cursorPosition).lastIndexOf(trigger2);
query = text.substring(lastTriggerPosition2 + trigger2.length, cursorPosition);
$(this).autocomplete("search", query);
}
else if (textLength >= trigger.length) {
// set trigged to true, if the string before the cursor is triggerStart
lastString = text.substring(cursorPosition - trigger.length, cursorPosition);
acTrigger.triggered = (lastString === trigger);
acTrigger.triggered2 = (lastString === trigger2);
}
}
});
},
/**
* @description Destroy an instantiated plugin and clean up modifications the widget has made to the DOM
*/
destroy: function () {
// this.element.removeStuff();
// For UI 1.8, destroy must be invoked from the
// base widget
$.Widget.prototype.destroy.call(this);
// For UI 1.9, define _destroy instead and don't
// worry about
// calling the base widget
},
/**
* @description calculates the the current cursor position in the bound textfield, area,...
* @returns {int} the position of the cursor.
*/
getCursorPosition: function () {
var elem = this.element[0];
var position = 0;
// dom 3
if (elem.selectionStart >= 0) {
position = elem.selectionStart;
// IE
} else if (elem.ownerDocument.selection) {
var r = elem.ownerDocument.selection.createRange();
if (!r) return data;
var tr = elem.createTextRange(), ctr = tr.duplicate();
tr.moveToBookmark(r.getBookmark());
ctr.setEndPoint('EndToStart', tr);
position = ctr.text.length;
}
return position;
}
});
})(jQuery, window, document);
并在视图中：
$('input,textarea').autocompleteTrigger({
triggerStart: '#',
triggerEnd: '',
triggerStart2: '@@',
sourceOption1: '/UITests/LookupFirst',
sourceOption2: '/UITests/LookupSec'
});
控制器操作方法（LookupSec完全相同）是：
public ActionResult LookupFirst(string q)
{
var list = new List<string>()
{
"Asp",
"BASIC",
"COBOL",
"ColdFusion",
"Erlang",
"Fortran",
"Groovy",
"Java",
"JavaScript",
"Lisp",
"Perl",
"PHP",
"Python",
"Ruby",
"Scala",
"Scheme"
};
IEnumerable<string> data;
if (q != null)
{
data = list.Where(x => x.StartsWith(q));
}
else
data = list;
return Json(data, JsonRequestBehavior.AllowGet);
}
现在它支持两个触发器@和＃以及每个触发器的两个数据源...
问题是搜索不再起作用，一切按预期工作“几乎”但是当我输入类似“@as”的东西时，它应该过滤结果但它不会！
知道为什么这不起作用？
答案 0 :(得分：1)
您似乎正在使用 LookupSec操作来过滤@字符，但在您的问题中，您只显示了LookupFirst与#相关联的操作1}}过滤字符。我已经测试了您的代码，它适用于#而不适用于@，因为LookupSec不存在。
一旦我定义了 LookupSec控制器动作，它就可以用于两者。请注意，现在您已在窗口小部件中对这些操作名称进行了硬编码，因此sourceOption1和sourceOption2参数将被完全忽略。
jquery自动完成使用的查询字符串参数称为term，而不是q，因此请立即修复您的控制器操作，不要过滤任何内容：
public ActionResult LookupFirst(string term)
{
...
}