Question

Is it possible for javascript / jquery / html / css / something else to block all text inside input field upon entering the said field?

It sounds like n00b question, but I can’t find the answer >_<

Answer 1

Do you mean the disabled attribute which you can add with javascript once the blur event of the input has fired?

$("input[type=text]").blur(function(){
    if($(this).val().length){
        $(this).attr("disabled","disabled");
    }
});

Should do the trick (not tested, but should work).