Scipt form change active,method

**** Code:
<form action="http://baodiaoc.vn/tim-kiem/mua" method="POST" class="head-search" name="suggestion">   
    <center><h1>Tìm kiếm ngôi nhà bạn yêu thích</h1></center>
<div class="sort-home">
    <button class="r-n-d" type="button" data-value="mua" name="search">
        <span class="display-type">
                Mua nhà đất
            </span>
        <span class="glyphicon glyphicon-chevron-down" aria-hidden="true"></span>
    </button>
   
    <ul class="suggest-result" style="display: none;">
        <li style="display: block;">
            <a href="http://baodiaoc.vn/tim-kiem/thue" data-value="thue" name="search">
                <span>Thuê nhà đất</span>
            </a>
        </li>
        <li style="display: none;">
            <a href="http://baodiaoc.vn/tim-kiem/mua" data-value="mua" name="search">
                <span>Mua nhà đất</span>
            </a>
        </li>
    </ul>
</div>
    <input class="form-control search-text" id="" required="required" placeholder="Nhập tên quận, đường, khu dân cư hoặc tòa nhà" value="" type="text">

    <button class="glyphicon glyphicon-search search-submit" aria-hidden="true" type="submit"></button>
</form>


**** JS

jQuery(document).ready(function($) {

    var that = this;
    var $suggestInp = $("form[name=suggestion] input");
    var $typeDropdown = $("form[name=suggestion] .sort-home button");
    var $typePopup = $("form[name=suggestion] .sort-home .suggest-result");
    var $suggestResult = $(".suggest-result.suggestion");
    var $suggestForm = $("form[name=suggestion]");
    var SUGGEST_INTERVAL = 400;

    $("form[name=suggestion] .sort-home button").click(function(e) {
        e.preventDefault();
        if ($(this).next().css("display") === "block"){
            $("form[name=suggestion] .sort-home .suggest-result").css("display", "none");
        }else{
            $("form[name=suggestion] .sort-home .suggest-result").css("display", "block");
        }
    });

    $typePopup.find("a[data-value=" + $typeDropdown.attr("data-value") + "]").parent().css("display", "none");
    $typePopup.find("a").click(function(e) {
        e.preventDefault();
        var $this = $(this);
        $typePopup.find("li").css("display", "block");
        $this.parent().css("display", "none");
        $typeDropdown.attr("data-value", $this.attr("data-value"));
        $typeDropdown.find(".display-type").text($this.text());
        $suggestForm.attr("action", $this.attr("href"));
        $typePopup.css("display", "none");
    });

});