OnClientClick is not working as intended

so, the values for c1, c2, c3 and r1, r2, r3 have to be pulled from textboxes withthin the function and it works

function CheckData() {

    var raspuns = false;

    var rr1 = $("#txtRaspuns1").val().length;
    var rr2 = $("#txtRaspuns2").val().length;
    var rr3 = $("#txtRaspuns3").val().length;


    if (rr1 != 0 && rr2 != 0 && rr3 != 0) {

        raspuns = true;
    }
    else {
        raspuns = false;
    }

    var corect = false;

    var cc1 = $("#txtCorect1").val();
    var cc2 = $("#txtCorect2").val();
    var cc3 = $("#txtCorect3").val();

    if (cc1 == "DA" && cc2 == "NU" && cc3 == "NU") {

        corect = true;
    }
    else if (cc1 == "NU" && cc2 == "DA" && cc3 == "NU") {

        corect = true;
    }
    else if (cc1 == "NU" && cc2 == "NU" && cc3 == "DA") {

        corect = true;
    }
    else {

        corect = false;
    }

    if (raspuns == true && corect == true) {

        return true;
    }
    else {

        return false;
    }
}