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jQuery实现下拉框多选 jquery-multiselect 的实例代码

时间:2024-3-2 08:57     作者:韩俊     分类: Javascript


先给大家展示下效果图:

除了jquery,需要引用的样式和js文件:

<link rel="stylesheet" type="text/css" href="../assets/jquery.multiselect.css" />
<link rel="stylesheet" type="text/css" href="../assets/style.css" />
<link rel="stylesheet" type="text/css" href="../assets/prettify.css" />
<link href="../assets/jquery-ui.css" rel="stylesheet" />
<script src="../assets/jquery.js"></script>
<script src="../assets/jquery-ui.min.js"></script>
<script type="text/javascript" src="../assets/prettify.js"></script>
<script type="text/javascript" src="../assets/jquery.multiselect.js" charset=gb2312></script>

HTML代码:

<select title="Basic example" multiple="multiple" name="example-basic" size="5" id="ddlConditions">
<option value="1">Option 1</option>
<option value="2">Option 2</option>
<option value="3">Option 3</option>
<option value="4">Option 4</option>
<option value="5">Option 5</option>
<option value="6">Option 6</option>
<option value="7">Option 7</option>
</select> 

默认选中值1,2,3,绑定指定的选项:

var strcondition = '1,2,3'; 
var ids = strcondition.split(','); 
if (ids != null) { 
$('#ddlConditions').val(ids);
$('#ddlConditions').multiselect("refresh"); 
}

获取选中的多个值:

首先修改jquery.multiselect.js,添加全局变量multiValues ,用来存放选项值,然后修改update方法,添加multiValues 那一行代码:

update: function() {
var o = this.options;
var $inputs = this.inputs;
var $checked = $inputs.filter(':checked');
var numChecked = $checked.length;
var value;
if(numChecked === 0) {
value = o.noneSelectedText;
} else {
if($.isFunction(o.selectedText)) {
value = o.selectedText.call(this, numChecked, $inputs.length, $checked.get());
} else if(/d/.test(o.selectedList) && o.selectedList > 0 && numChecked <= o.selectedList) {
value = $checked.map(function() { return $(this).next().html(); }).get().join(', ');
} else {
value = o.selectedText.replace('#', numChecked).replace('#', $inputs.length);
}
multiValues = $checked.map(function () { return $(this).val(); }).get().join(',');
}
this._setButtonValue(value);
return value;
}, 

再添加自定义方法:

MyValues:function(){
return multiValues;
}, 

页面使用此自定义方法,获取选中值的代码:

if ($('input[name=multiselect_ddlConditions]:checked').length < 1)
alert('Please Select Option');
else {
var strConditions = $("#ddlConditions").multiselect("MyValues");
}

以上所述是小编给大家介绍的jQuery实现下拉框多选 jquery-multiselect 的实例代码,希望对大家有所帮助,如果大家有任何疑问请给我留言,小编会及时回复大家的。在此也非常感谢大家对毛票票网站的支持!

标签: javascript

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