multiselect 下载使用:
链接:https://pan.baidu.com/s/18_yo3OGqR-FTUQ7ML3K97g 密码:auut
<link rel=
"stylesheet"
type=
"text/css"
href=
"bootstrap-multiselect.css"
>
<script type=
"text/javascript"
src=
"bootstrap-multiselect.js"
></script>
直接使用
<
div
>
<
select
multiple="multiple">
<
option
>上海</
option
>
<
option
>江苏</
option
>
<
option
>山东</
option
>
<
option
>广西</
option
>
</
select
>
</
div
>
<script>
$("#multiselect_select").multiselect({
buttonWidth:195, //选择框的大小
includeSelectAllOption: true,//是否现实全选
nonSelectedText: '省份/城市',
selectAllText: '全部',
allSelectedText: '全部',
selectAllValue: '全部',
includeSelectAllOption: true,
});
</script>
![](https://img2018.cnblogs.com/blog/1067925/201907/1067925-20190716091638738-1001526985.png)
这时候全选
按需求上海,江苏等城市全部选上
分析:
buttonText: function(options, select) {
if (this.disabledText.length > 0
&& (select.prop('disabled') || (options.length == 0 && this.disableIfEmpty))) {
return this.disabledText;
}
else if (options.length === 0) {
$('.checker span').removeClass('checked') //添加全部取消
return this.nonSelectedText;
}
else if (this.allSelectedText
&& options.length === $('option', $(select)).length
&& $('option', $(select)).length !== 1
&& this.multiple) {
if (this.selectAllNumber) {
var selected = '';
options.each(function() {
$('.checker span').addClass('checked')
}); //全部选中
return this.allSelectedText + ' (' + options.length + ')';
}
else {
return this.allSelectedText;
}
}
else if (this.numberDisplayed != 0 && options.length > this.numberDisplayed) {
return options.length + ' ' + this.nSelectedText;
}
else {
var selected = '';
var delimiter = this.delimiterText;
options.each(function() {
var label = ($(this).attr('label') !== undefined) ? $(this).attr('label') : $(this).text();
selected += label + delimiter;
});
return selected.substr(0, selected.length - this.delimiterText.length);
}
}
如上可实现,如有其它效果请加群讨论