学步园

// 全部选中
    function QuanXuan_Click() {
        var check = document.getElementsByTagName("input");
        for (var i = 0; i < check.length; i++) {
            if (check[i].type == "checkbox") {
                check[i].checked = true;
            }
        }

    }

    // 取消选中
    function QuXiao_Click() {
        var check = document.getElementsByTagName("input");
        for (var i = 0; i < check.length; i++) {
            if (check[i].type == "checkbox") {
                check[i].checked = false;
            }
        }

    }

    // 反选
    function slcNo_click() {
        var check = document.getElementsByTagName("input");
        for (var i = 0; i < check.length; i++) {
            if (check[i].type == "checkbox") {
                if (check[i].checked == false) {
                    check[i].checked = true;
                }
                else {
                    check[i].checked = false;
                }

            }

        }
    }