排序

点击某个排序时首先按升序显示，再次点击再变为降序，并且还会显示上升或下降箭头

页面排序跳转的思路是通过点击某个按钮时会向其​​class​​属性添加/去除​​desc​​，并根据属性值进行url拼接

点击排序时

$(".sort_a").click(function () {
        changeStyle(this);
        let sort = $(this).attr("sort");
        sort = $(this).hasClass("desc") ? sort + "_desc" : sort + "_asc";
        location.href = replaceParamVal(location.href, "sort", sort,false);

        return false;
    });

 当点击的时候，改变样式，并进行请求的拼接，阻止默认的跳转行为

改变样式 

function changeStyle(ele) {
        // location.href = replaceParamVal(href, "pageNum", pn,flase);
        // color: #333; border-color: #ccc; background: #fff
        // color: #fff; border-color: #e4393c; background: #e4393c
        $(".sort_a").css({"color": "#333", "border-color": "#ccc", "background": "#fff"});
        $(".sort_a").each(function () {
            let text = $(this).text().replace("↓", "").replace("↑", "");
            $(this).text(text);
        })

        $(ele).css({"color": "#FFF", "border-color": "#e4393c", "background": "#e4393c"});
        $(ele).toggleClass("desc");
        //升降序改变
        if ($(ele).hasClass("desc")) {
            //降序
            let text = $(ele).text().replace("↓", "").replace("↑", "");
            text = text + "↓";
            $(ele).text(text);
        } else {
            //升序
            let text = $(ele).text().replace("↓", "").replace("↑", "");
            text = text + "↑";
            $(ele).text(text);
        }
    };

  let text = $(ele).text().replace("↓", "").replace("↑", "");进行替换字符，显示在前端界面

 价格区间

<input id="skuPriceFrom" type="number"       th:value="${#strings.isEmpty(priceRange)?'':#strings.substringBefore(priceRange,'_')}"
       style="width: 100px; margin-left: 30px">
-
<input id="skuPriceTo" type="number"
       th:value="${#strings.isEmpty(priceRange)?'':#strings.substringAfter(priceRange,'_')}"
       style="width: 100px">
<button id="skuPriceSearchBtn">确定</button>
增加input标签进行传递次数进行拼接

 点击确认时

$("#skuPriceSearchBtn").click(function () {
        let from = $(`#skuPriceFrom`).val();
        let to = $(`#skuPriceTo`).val();

        let query = from + "_" + to;
        location.href = replaceParamVal(location.href, "skuPrice", query,false);
    });

 库存存在

<li>    <a th:with="check = ${param.hasStock}">
        <input id="showHasStock" type="checkbox" th:checked="${#strings.equals(check,'1')?true:false}">
        仅显示有货
    </a>
</li>
点击查询时候
$("#showHasStock").change(function () {    alert( $(this).prop("checked") );
    if( $(this).prop("checked") ) {
        location.href = replaceParamVal(location.href,"hasStock",1,false);
    } else {
        let re = eval（'/(hasStock=)([^&]*)/gi');
        location.href = (location.href+"").replace(re,"");
    }
    return false;
});

replaceParamVal函数

function replaceParamVal(url, paramName, replaceVal,forceAdd) {
        var oUrl = url.toString();
        var nUrl;
        if (oUrl.indexOf(paramName) != -1) {
            if( forceAdd ) {
                if (oUrl.indexOf("?") != -1) {
                    nUrl = oUrl + "&" + paramName + "=" + replaceVal;
                } else {
                    nUrl = oUrl + "?" + paramName + "=" + replaceVal;
                }
            } else {
                var re = eval（'/(' + paramName + '=)([^&]*)/gi');
                nUrl = oUrl.replace(re, paramName + '=' + replaceVal);
            }
        } else {
            if (oUrl.indexOf("?") != -1) {
                nUrl = oUrl + "&" + paramName + "=" + replaceVal;
            } else {
                nUrl = oUrl + "?" + paramName + "=" + replaceVal;
            }
        }
        return nUrl;
    };