javascript - Disable inputs if checkbox is checked -


i have ticket purchase form. have fill peronal information there. possible buy empty ticket, without name on it. requires clicking on checkbox, makes input fields disabled. var inputsdisabled = 0;

    $("#three").change(function(){         if(inputsdisabled == 0){             $("input[name=fname]").attr("disabled", true);            $("input[name=lname]").attr("disabled", true);            $("input[name=email]").attr("disabled", true);            $("input[name=sponsor]").attr("disabled", true);            $("input[name=phone]").attr("disabled", true);             inputsdisabled = 1;        }        else{             $("input[name=fname]").attr("disabled", false);            $("input[name=lname]").attr("disabled", false);            $("input[name=email]").attr("disabled", false);            $("input[name=sponsor]").attr("disabled", false);            $("input[name=phone]").attr("disabled", false);             inputsdisabled = 0;        }     });

when buys empty ticket , presses "back" browser button, gets form. mentioned checkbox still checked automatically fields not disabled anymore. tried use code below doesnt help.

if ("#three".checked) {             $("input[name=fname]").attr("disabled", true);             $("input[name=lname]").attr("disabled", true);             $("input[name=email]").attr("disabled", true);             $("input[name=sponsor]").attr("disabled", true);             $("input[name=phone]").attr("disabled", true);         }

is there better way this?

i think if condition should this

if($("#three").is(":checked")) {   $("input[name=fname]").attr("disabled", true);   $("input[name=lname]").attr("disabled", true);   $("input[name=email]").attr("disabled", true);   $("input[name=sponsor]").attr("disabled", true);   $("input[name=phone]").attr("disabled", true); }

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