A simple jquery multi-select drop-down box (self-written)_jquery

The project I was working on today required the use of a multi-select drop-down box. I initially wanted to find a plug-in on the Internet to use it. However, the plug-ins on the Internet seemed quite messy. I referred to some plug-ins on the Internet and wrote a multi-select one using jquery. The drop-down box is written in js relatively concisely. The code is as follows.

js code

Copy code The code is as follows:

(function() {
$.fn.extend({
checks_select: function(options){
jq_checks_select = null;
$(this).click(function(e){
jq_check = $( this);
//jq_check.attr("class", "");
if (jq_checks_select == null) {
jq_checks_select = $("

< ;/div>").insertAfter(jq_check);
$.each(options, function(i, n){
check_div=$("

" n "

").appendTo(jq_checks_select);
check_box=check_div.children();
check_box.click(function(e){
/ /jq_check.attr("value",$(this).attr("value") );

temp="";
$("input:checked").each(function(i ){
if(i==0){
temp=$(this).attr("value");
}else{
temp="," $(this).attr ("value");
}
});
jq_check.attr("value",temp);
e.stopPropagation();
});
}) ;
}else{
jq_checks_select.toggle();

}
e.stopPropagation();
});
$(document).click(function ( ) {
jq_checks_select.hide();
});
//$(this).blur(function(){
//jq_checks_select.css("visibility","hidden") ;
//alert();
//});
}
})

})(jQuery);

html

Copy code The code is as follows:

Requires jquery library

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