Question

Want to create chained textbox :

textbox1            textbox2             textbox3
_________           ____________       _____________
|___A____|         |(1)disabled|       |(a)disabled|

textbox1(value):A,B,C,D,E; 
textbox2(value):1,2,3,4,5; 
textbox3(value):a,b,c,d,e; like-> "A,1,a","B,2,b"=> this will be the combination

Where selecting the value of textbox1,corresponding value to textbox1 will appear in textbox2,so as in textbox3 w.r.t textbox3.And my predefined value will be stored in jQuery function,on calling it will fill the value.

Suggestion…. needed

Answer 1

$(".chainbox").on("keyup", function(){
    $(".chainbox").val(this.value);
});​

DEMO 1

I think you want a selectbox instead of checkbox (not sure)

$(".myselect").on("change", function(){

    // here I update value of next select box 
    // using current selectbox value
    // may be you have something else

    $(this).next('.myselect').val(this.value).prop('disabled', false);
});​

DEMO 2

If you want to show the selected text of first select to next two text box then:

$(".myselect").on("change", function(){
    $(this).nextAll(':input.mytext').val($('option:selected', this).text());
});

DEMO 3