jQuery实现select模糊查询（反射机制）
(编辑：jimmy 日期: 2025/10/24 浏览：3 次 )
通过如下代码就可以简单实现select带模糊查询的条件查询，具体如下jquery.select.js如下：
(function($) {
$.selectSuggest = function(target, data, itemSelectFunction) {
var defaulOption = {
suggestMaxHeight: '200px',//弹出框最大高度
itemColor : '#000000',//默认字体颜色
itemBackgroundColor:'RGB(199,237,204)',//默认背景颜色
itemOverColor : '#ffffff',//选中字体颜色
itemOverBackgroundColor : '#C9302C',//选中背景颜色
itemPadding : 3 ,//item间距
fontSize : 12 ,//默认字体大小
alwaysShowALL : true //点击input是否展示所有可选项
};
var maxFontNumber = 0;//最大字数
var currentItem;
var suggestContainerId = target + "-suggest";
var suggestContainerWidth = $('#' + target).innerWidth();
var suggestContainerLeft = $('#' + target).offset().left;
var suggestContainerTop = $('#' + target).offset().top + $('#' + target).outerHeight();
var showClickTextFunction = function() {
$('#' + target).val(this.innerText);
currentItem = null;
$('#' + suggestContainerId).hide();
}
var suggestContainer;
if ($('#' + suggestContainerId)[0]) {
suggestContainer = $('#' + suggestContainerId);
suggestContainer.empty();
} else {
suggestContainer = $('<div></div>'); //创建一个子<div>
}
suggestContainer.attr('id', suggestContainerId);
suggestContainer.attr('tabindex', '0');
suggestContainer.hide();
var _initItems = function(items) {
suggestContainer.empty();
var itemHight=0;
for (var i = 0; i < items.length; i++) {
if(items[i].text.length > maxFontNumber){
maxFontNumber = items[i].text.length;
}
var suggestItem = $('<div></div>'); //创建一个子<div>
suggestItem.attr('id', items[i].id);
suggestItem.append(items[i].text);
suggestItem.css({
'padding':defaulOption.itemPadding + 'px',
'white-space':'nowrap',
'cursor': 'pointer',
'background-color': defaulOption.itemBackgroundColor,
'color': defaulOption.itemColor
});
suggestItem.bind("mouseover",
function() {
$(this).css({
'background-color': defaulOption.itemOverBackgroundColor,
'color': defaulOption.itemOverColor
});
currentItem = $(this);
});
suggestItem.bind("mouseout",
function() {
$(this).css({
'background-color': defaulOption.itemBackgroundColor,
'color': defaulOption.itemColor
});
currentItem = null;
});
suggestItem.bind("click", showClickTextFunction);
suggestItem.bind("click", itemSelectFunction);
suggestItem.appendTo(suggestContainer);
suggestContainer.appendTo(document.body);
}
}
var inputChange = function() {
var inputValue = $('#' + target).val();
inputValue = inputValue.replace(/[\-\[\]{}()*+"\\$&");
var matcher = new RegExp(inputValue, "i");
return $.grep(data,
function(value) {
return matcher.test(value.text);
});
}
$('#' + target).bind("keyup",
function() {
_initItems(inputChange());
});
$('#' + target).bind("blur",
function() {
if(!$('#' + suggestContainerId).is(":focus")){
$('#' + suggestContainerId).hide();
if (currentItem) {
currentItem.trigger("click");
}
currentItem = null;
return;
}
});
$('#' + target).bind("click",
function() {
if (defaulOption.alwaysShowALL) {
_initItems(data);
} else {
_initItems(inputChange());
}
$('#' + suggestContainerId).removeAttr("style");
var tempWidth = defaulOption.fontSize*maxFontNumber + 2 * defaulOption.itemPadding + 30;
var containerWidth = Math.max(tempWidth, suggestContainerWidth);
var h = this.scrollHeight;
$('#' + suggestContainerId).css({
'border': '1px solid #ccc',
'max-height': '100px',
'top': suggestContainerTop,
'left': suggestContainerLeft,
'width': containerWidth,
'position': 'absolute',
'font-size': defaulOption.fontSize+'px',
'font-family':'Arial',
'z-index': 99999,
'background-color': '#FFFFFF',
'overflow-y': 'auto',
'overflow-x': 'hidden',
'white-space':'nowrap'
});
$('#' + suggestContainerId).show();
});
_initItems(data);
$('#' + suggestContainerId).bind("blur",
function() {
$('#' + suggestContainerId).hide();
});
}
})(jQuery);
html如下：
<!DOCTYPE html> <html lang="zh_cn"> <head> <title>select.suggest</title> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <!-- Bootstrap --> <script src="/UploadFiles/2021-04-02/jquery-1.10.2.js">以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。
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