js 下拉框实现去重 & layui可输入可搜索的下拉框

从后台获取的下拉框数据存在重复，可以采用下面的方法去重

// 下拉框去除重复
$("select").each(function(i,n){
    var options = "";
    $(n).find("option").each(function(j,m){
        if(options.indexOf($(m)[0].outerHTML) == -1)
        {
            options += $(m)[0].outerHTML;
         }
    });
     $(n).html(options);
});    

　　

可输入的下拉框，能输入，也能搜索

form.on('select(solution_selection)', function (data) {   //选择 赋值给input框
	$("#solution_input").val(data.value);
	$("#solution_selection").next().find("dl").css({ "display": "none" });
	form.render();
});

window.solution = function () {
	var value = $("#solution_input").val();
	$("#solution_selection").val(value);
	form.render();
	if (value != '') {
	  $("#solution_selection").next().find("dl").css({ "display": "block" });
	}
    var dl = $("#solution_selection").next().find("dl").children();
	var j = -1;
	for (var i = 0; i < dl.length; i++) {
		if (dl[i].innerHTML.indexOf(value) <= -1) {
	   		dl[i].style.display = "none";
	   		j++;
		}
	    if (j == dl.length-1) {
	       $("#solution_selection").next().find("dl").css({ "display": "none" });
	    }
	   	if (dl[i].innerHTML == (value)) {
	      $("#solution_selection").next().find('dl').css({"display":"none"});
	      continue;
	    }
	}

}