编辑页面--下拉框回显

 <tr>
                                        <td>新闻来源：</td>
                                        <td>
                                            <select name="source" class="input input-small" style="width: 150px;"
                                                    id="news">
                                                <#list newSource as l>
                                                    <option value="${l}">
                                                        ${l}
                                                    </option>
                                                </#list>
                                            </select>
                                        </td>
                                    </tr>
                                    <tr>
                                        <td>关键字：</td>
                                        <td>
                                            <select class="input input-small" name="type" style="width: 150px;"
                                                    id="key_word">
                                                        <#list keys as k>
                                                            <option value="${k}">
                                                                ${k}
                                                            </option>
                                                        </#list>
                                            </select>
                                        </td>
                                    </tr>
                                    <tr>

 //*******新闻资源的回显
        var sum = $("#news option").length;
        for (var i = 0; i < sum; i++) {
            if ($("#news").get(0).options[i].value.trim() == "${article.source}") {
                var a = document.getElementById("news")[i].value;
                document.getElementById("news")[i].setAttribute("selected", "selected");
                break;
            }
        }
        // *******关键字的回显
        var sum_key = $("#key_word option").length;
        for (var i = 0; i <sum_key; i++) {
            if ($("#key_word").get(0).options[i].value.trim() == "${article.type}") {
                var a = document.getElementById("key_word")[i].value;
                document.getElementById("key_word")[i].setAttribute("selected", "selected");
                break;
            }
        }