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