how to extract decimal number from string using javascript

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 6  1922

I want to extract decimal number 265.12 or 0.0 from alphanumeric string (say amount) having value $265.12+ or $265.12- or

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一生所求

2021-01-12 11:13
Without error checks, following will do:
```
var string = "$123123.0980soigfusofui"
var number = parseFloat(string.match(/[\d\.]+/))
```
123123.098
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一个人的身影

2021-01-12 11:13

Try this also,

<script type="text/javascript">
function validate(){
    var amount =  $("#amount").val();
    alert(amount.split(".")[1]);
} </script>
</head> 
<body>
<input type="hidden" name="amount" id="amount" value="25.50">
<input type="submit" onclick="validate();">

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被撕碎了的回忆

2021-01-12 11:16

You might be interested in this library for formatting money http://josscrowcroft.github.com/accounting.js/

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情深已故

2021-01-12 11:29
You can use regex like this,

Live Demo
```
var amount = "$265.12+";
var doublenumber = Number(amount.replace(/[^0-9\.]+/g,""));
```
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清歌不尽

2021-01-12 11:32

A more elegant solution and also a method to avoid the 0.7700000004 javascript math do this:

var num = 15.3354; Number(String(num).substr(String(num).indexOf('.')+1));

The result will always be the exact number of decimals. Also a prototype for easier use

Number.prototype.getDecimals = function () { return Number(String(this).substr(String(this).indexOf('.')+1)); }

so now just 15.6655.getDecimals() ==> 6655

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不思量自难忘°

2021-01-12 11:34

use :

var str = parseFloat("$265.12".match(/[\d\.]+/))
alert(str % 1); => 0.12000000000000455

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