How to format a dollar?

Question

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How can I format numbers as money in JavaScript?

I am doing a divide and multiply to figure out the value of a field and the value looks like this

$32560.000000000004.00

I am setting the value like this

sq_footage = $("#sq_footage").val();
sq_footage_total = (((sq_footage / 36) * factor) * average )* 30;
if(factor != ""){
    $("#new_calc").val("$" + sq_footage_total + ".00");
}

Is there a way to format it like

$32,560.00

From quick Google search: http://plugins.jquery.com/plugin-tags/currency-money-format — Shadow The GPT Wizard, Mar 17 '11 at 14:39
http://www.google.com/#sclient=psy&hl=en&q=jquery+currency+format&aq=0p&aqi=p-p2g3&aql=&oq=&pbx=1&bav=on.2,or.r_gc.r_pw.&fp=7baa05c8a727054d — fsonmezay, Mar 17 '11 at 14:46
http://stackoverflow.com/questions/149055/how-can-i-format-numbers-as-money-in-javascript — David Machel, Mar 17 '11 at 14:40

score 2 · Answer 1 · edited Jul 18 '21 at 00:27

I know this has been solved before, but here's my solution just for fun:

function formatDollar(num) {
    var p = num.toFixed(2).split(".");
    return ["$", p[0].split("").reverse().reduce(function(acc, num, i) {
        return num + (i && !(i % 3) ? "," : "") + acc;
    }, "."), p[1]].join("");
}

And some tests:

formatDollar(45664544.23423) // "$45,664,544.23"
formatDollar(45) // "$45.00"
formatDollar(123) // "$123.00"
formatDollar(7824) // "$7,824.00"
formatDollar(1) // "$1.00"
formatDollar(939,009) // ?

function formatDollar(num) {
      var p = num.toFixed(2).split(".");
      return ["$", p[0].split("").reverse().reduce(function(acc, num, i) {
        return num + (i && !(i % 3) ? "," : "") + acc;
      }, "."), p[1]].join("");
    }


    const tests = [
      {
        input: 45664544.23423,
        expected: "$45,664,544.23"
      },
      {
        input: 45,
        expected: "$45.00"
      },
      {
        input: 123,
        expected: "$123.00"
      },
      {
        input: 7824,
        expected: "$7,824.00"
      },
      {
        input: 1,
        expected: "$1.00"
      },
      {
        input: -939009,
        expected: "-$939,009.00"
      }
    ]

    tests.forEach(test => {
      const { input, expected } = test
      const actual = formatDollar(input)
      if (expected !== actual) {
        console.log(`Failed: ${input}. Expected ${expected}; actual: ${actual}`)
      } else {
        console.log(`Passed: ${input}`)
      }
    })

score 0 · Answer 2 · answered Mar 17 '11 at 14:41

0

Your tag indicates that you are using jquery - so you might use the jQuery Format Currency Plugin

answered Mar 17 '11 at 14:41

MacGucky

2,494
17
17

How to format a dollar?

2 Answers2