jquery - How can I get an input text to expand its digits to two if the user only enters one? -

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i want display values in text inputs in "dollar format"; iow, instead of "10.5" want "10.50"

i able in grand total box (last line of code):

$(document).on("blur", '.amountbox', function (e) {     var amount1 = $('[id$=boxamount1]').val() != '' ? parsefloat($('[id$=boxamount1]').val()) : 0;     var amount2 = $('[id$=boxamount2]').val() != '' ? parsefloat($('[id$=boxamount2]').val()) : 0;     var amount3 = $('[id$=boxamount3]').val() != '' ? parsefloat($('[id$=boxamount3]').val()) : 0;     var amount4 = $('[id$=boxamount4]').val() != '' ? parsefloat($('[id$=boxamount4]').val()) : 0;     var amount5 = $('[id$=boxamount5]').val() != '' ? parsefloat($('[id$=boxamount5]').val()) : 0;     var grandtotal = amount1 + amount2 + amount3 + amount4 + amount5;     $('[id$=boxgrandtotal]').val(parsefloat(grandtotal).tofixed(2)); });

that working, thought maybe individual "amount" boxes work doing (adding ".tofixed(2)" val()s):

var amount1 = $('[id$=boxamount1]').val() != '' ? parsefloat($('[id$=boxamount1]').val().tofixed(2)) : 0; var amount2 = $('[id$=boxamount2]').val() != '' ? parsefloat($('[id$=boxamount2]').val().tofixed(2)) : 0; . . .

it didn't; fact, broke existing functionality.

so "dialed bit" , tried on first "amount" box so:

$('[id$=boxamount1]').val() == parsefloat($('[id$=boxamount1]').val().tofixed(2));

...but failed (entering "10.5" , exiting/blurring did not convert "10.5" "10.50" hoped).

how can cause inputs expand or contract display 2 digits? iow:

"10" should become "10.00" "10.5" should become "10.50" "10.567" should become "10.57"

etc.

instead of this:

$('[id$=boxamount1]').val() == parsefloat($('[id$=boxamount1]').val().tofixed(2));

… this:

$('[id$=boxamount1]').val(parsefloat($('[id$=boxamount1]').val()).tofixed(2));

note tofixed() method works numbers only, need apply numeric result of parsefloat() instead of string result of val().

entire code can reduced following:

$(document).on('blur', '.amountbox', function() {   var grandtotal = 0;   $('.amountbox').each(function() {     var v= +$(this).val();     if(v>'') {       $(this).val(v.tofixed(2));       grandtotal+= v;     }   });   $('#boxgrandtotal').val(grandtotal.tofixed(2)); });

the jquery each method saves trouble of looking @ each input individually.

prepending plus sign (+) string coerces number, parsefloat isn't needed.

fiddle


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