js 获取tr下的td下的 input值

function copySupply(_idx) {    var copySupplys = [];    var copySupplythis = [];    //checkbox的全选方法    $("#getAllMatterSupplyCheckbox").click(function () {        $("input[name='sid']").prop("checked", this.checked);    });    $("input[name='sid']").click(function () {        var ids = $("input[name='sid']");        $("#getAllMatterSupplyCheckbox").prop("checked", ids.length == ids.filter(":checked").length ? true : false);    });    $('input[name="sid"]:checked').each(function () {        copySupplys.push($(this).val());        copySupplythis.push(this.parentNode.parentNode);    });    if (copySupplythis.length != 0) {        console.log("_idx=" + _idx);        for (var i = 0, j = copySupplythis.length; i < j; i++) {            var _tr = copySupplythis[i];            console.log(_tr);            var td = _tr.cells;            console.log(td[1].children[0].value);            console.log(td[1].children[1].value);

}

     }

}

结果