how to append double digit if user passed single digit value using jquery

Question

I'm working on jquery.

i want to check the validation on todate and from date.

want to convert my string into double digit (need to add 0 if user enter single digit value)

how can i give double digit as user enter single digit value into textbox?

expected output is 
  var HourPerWeek = $("#Hour").val(); 
 -- if user enter value 2 i need to convert it into 02
  var MinPerWeek = $("#Min").val();    
-- if user enter value 1 i need to convert it into 01

Instead of length of string ?

score 2 · Answer 1 · answered Sep 17 '13 at 10:38

2

function returnDoubleDigits(str) {
  return str.length === 1 ? '0' + str : str;
}

e.g.

var HourPerWeek = returnDoubleDigits($("#Hour").val());

Fiddle

answered Sep 17 '13 at 10:38

Andy

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It does not work if a actual number is passed. `("" + str).length` will do the trick. – Exception Sep 17 '13 at 16:42
A number was never going to be passed in. That's why I called my param `str`. – Andy Sep 17 '13 at 16:45
it is safe to make that method more generic. – Exception Sep 17 '13 at 16:54
Maybe so, but for the purposes of answering the question, my answer was valid. – Andy Sep 17 '13 at 16:57

score 0 · Accepted Answer · answered Sep 17 '13 at 10:36

0

Would this work,just check the string length and then add a zero if it is shorter than 2

var HourPerWeek;
if ($("#Hour").val().length < 2){
   HourPerWeek = "0"+ $("#Hour").val(); 
}
else{
   HourPerWeek = $("#Hour").val();
}

answered Sep 17 '13 at 10:36

Morne

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score 0 · Answer 3 · edited May 23 '17 at 11:56

You will have to add the 0 to the beginning of the string manually like in this example:

String.prototype.paddingLeft = function (paddingValue) {
    return String(paddingValue + this).slice(-paddingValue.length);
};

var HourPerWeek = $("#Hour").val().paddingLeft('00');

Explanation: You can call paddingLeft on any string. It will add the chars, that you pass as an argument to the left of the string and return a string with exactly the length of the given argument. More examples:

   ''.paddingLeft('00') // returns '00'
  '1'.paddingLeft('00') // returns '01'
 '11'.paddingLeft('00') // returns '11'
'111'.paddingLeft('00') // returns '11'
  '1'.paddingLeft('  ') // returns ' 1'

But i want to add `0` when there is a single digit entered – Neo Sep 17 '13 at 10:39 — Neo, Sep 17 '13 at 10:39

score -2 · Answer 4 · answered Sep 17 '13 at 10:36

-2

Have this as a function which checks for length of passed parameter.

function returnTwoDigit(var Data){
if (Data.length != 2) {
    if (Data.length == 1) {
        Data= "0" + Data;
    }
    return Data
}

answered Sep 17 '13 at 10:36

Jay

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What if Data is number? – Exception Sep 17 '13 at 11:15
@Exception: I think it will still count number of digits in variable ````Data````, havn't tried it but thinks so. – Jay Sep 17 '13 at 11:25
If you try `.length` on number it will throw illegal exception. Make it `"" + Data` and the do the length operation for string and number. – Exception Sep 17 '13 at 16:41

how to append double digit if user passed single digit value using jquery

4 Answers4