jquery multiSelect 多选下拉框

$("#id").multiSelect({ oneOrMoreSelected: '*',selectAll:false,noneSelected:'默认显示' });
Usage: $('#id').multiSelect( options, callback )
Options: selectAll - whether or not to display the Select All option; true/false, default = true
selectAllText - text to display for selecting/unselecting all options simultaneously
noneSelected - text to display when there are no selected items in the list
oneOrMoreSelected - text to display when there are one or more selected items in the list
(note: you can use % as a placeholder for the number of items selected).
Use * to show a comma separated list of all selected; default = '% selected'
optGroupSelectable - whether or not optgroups are selectable if you use them; true/false, default = false
listHeight - the max height of the droptdown options
代码如下:

// Update the textbox with the total number of selected items, and determine select all 
$("#id").updateSelected() 
// Update the dropdown options 
$("#id").multiSelectOptionsUpdate() 
// Hide the dropdown 
$("#id").multiSelectOptionsHide() 
// Show the dropdown 
$("#id").multiSelectOptionsShow() 
// get a coma-delimited list of selected values 
$("#id").selectedValuesString 
 
使用javascript 设置多选框的默认选中项。 
 代码如下:

$("#id").attr("value","");//清空选中项。 
var ids='1,3,6';//设置选中框ID。 
var id_Ojbect=(ids).split(",");//分割为Ojbect数组。 
var count=$("#id option").length;//获取下拉框的长度。 
for(var c=0;c<id_Ojbect.length;c++){ 
for(var c_i=0;c_i<count;c_i++) 
{ 
if($("#id").get(0).options[c_i].text == id_Ojbect[c]) 
{ 
$("#id").get(0).options[c_i].selected = true;//设置为选中。 
} 
} 
} 

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