同事在網(wǎng)上的找的下拉列表框出現(xiàn)位置不對的和加載慢的BUG，反正多選下拉列表框?qū)崿F(xiàn)也很簡單，與其看那些結(jié)構(gòu)混亂的代碼，不如自己重新實現(xiàn)一個。
先看效果： http://demo.Vevb.com/js/2012/jquery_demo/jquery_select.html
JS:
代碼如下:
(function ($) {
$.fn.extend({
MultDropList: function (options) {
var op = $.extend({ wraperClass: "wraper", width: "150px", height: "200px", data: "", selected: "" }, options);
return this.each(function () {
var $this = $(this); //指向TextBox
var $hf = $(this).next(); //指向隱藏控件存
var conSelector = "#" + $this.attr("id") + ",#" + $hf.attr("id");
var $wraper = $(conSelector).wrapAll("<div><div></div></div>").parent().parent().addClass(op.wraperClass);
var $list = $('<div class="list"></div>').appendTo($wraper);
$list.css({ "width": op.width, "height": op.height });
//控制彈出頁面的顯示與隱藏
$this.click(function (e) {
$list.toggle();
e.stopPropagation();
});
$(document).click(function () {
$list.hide();
});
$list.filter("*").click(function (e) {
e.stopPropagation();
});
//加載默認數(shù)據(jù)
$list.append('<ul><li><input type="checkbox" class="selectAll" value="" /><span>全部</span></li></ul>');
var $ul = $list.find("ul");
//加載json數(shù)據(jù)
var listArr = op.data.split("|");
var jsonData;
for (var i = 0; i < listArr.length; i++) {
jsonData = eval("(" + listArr[i] + ")");
$ul.append('<li><input type="checkbox" value="' + jsonData.k + '" /><span>' + jsonData.v + '</span></li>');
}
//加載勾選項
var seledArr;
if (op.selected.length > 0) {
seledArr = selected.split(",");
}
else {
seledArr = $hf.val().split(",");
}
$.each(seledArr, function (index) {
$("li input[value='" + seledArr[index] + "']", $ul).attr("checked", "checked");
var vArr = new Array();
$("input[class!='selectAll']:checked", $ul).each(function (index) {
vArr[index] = $(this).next().text();
});
$this.val(vArr.join(","));
});
//全部選擇或全不選
$("li:first input", $ul).click(function () {
if ($(this).attr("checked")) {
$("li input", $ul).attr("checked", "checked");
}
else {
$("li input", $ul).removeAttr("checked");
}
});
//點擊其它復(fù)選框時，更新隱藏控件值,文本框的值
$("input", $ul).click(function () {
var kArr = new Array();
var vArr = new Array();
$("input[class!='selectAll']:checked", $ul).each(function (index) {
kArr[index] = $(this).val();
vArr[index] = $(this).next().text();
});
$hf.val(kArr.join(","));
$this.val(vArr.join(","));
});
});
}
});
})(jQuery);
$(document).ready(function () {
$("#txtTest").MultDropList({ data: $("#hfddlList").val() });
});
</script>
CSS:
