A simple plug-in that implements multiple selections in a drop-down box is more portable_jquery

When using the multiple-first drop-down box I wrote last time, I found a lot of problems. After modification and improvement, it can now be used well and has good portability. The following is the source code.

js

Copy code The code is as follows:

(function(){

$.fn.extend({
checks_select: function(options){
jq_checks_select = null;
$(this).val("---Please select---" );
$(this).next().empty(); //Empty first
$(this).unbind("click");
$(this).click(function(e ){
jq_check = $(this);
//jq_check.attr("class", "");
if (jq_checks_select == null) {
jq_checks_select = jq_check.next() ;
jq_checks_select.addClass("checks_div_select");
//jq_checks_select = $("

").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="";
$(this).parents().find("input:checked").each(function(i){
if( i==0){
temp=$(this).val();
}else{
temp ="," $(this).val();
}
});
//alert(temp);
jq_check.val(temp);
e.stopPropagation();
});
});
jq_checks_select.show ();
}else{
jq_checks_select.toggle();

}
e.stopPropagation();
});
$(document).click( function () {
flag=$("#test_div");
if(flag.val()==""){
flag.val("---Please select---" );
}
jq_checks_select.hide();
});
//$(this).blur(function(){
//jq_checks_select.css("visibility", "hidden");
//alert();
//});
}
})

})(jQuery);

html

Copy code The code is as follows:

< head>