JavaScript is_float

Returns true if variable is float point

function is_float (mixed_var) {
    // Returns true if variable is float point  
    // 
    // version: 1008.1718
    // discuss at: http://phpjs.org/functions/is_float    // +   original by: Paulo Freitas
    // +   bugfixed by: Brett Zamir (http://brett-zamir.me)
    // +   improved by: WebDevHobo (http://webdevhobo.blogspot.com/)
    // %        note 1: 1.0 is simplified to 1 before it can be accessed by the function, this makes
    // %        note 1: it different from the PHP implementation. We can't fix this unfortunately.    // *     example 1: is_float(186.31);
    // *     returns 1: true
    if (typeof mixed_var !== 'number') {
        return false;
    } 
    return !!(mixed_var % 1);
}

external links: original PHP docs | raw js source

Examples

Running

1	is_float(186.31);

Should return

true

Dependencies

No dependencies, you can use this function standalone.

Open syntax issues

php.js uses JsLint to help us keep our code consistent and prevent some common bugs.

Eventually we want all code to pass or at least take into consideration most fixes suggested by JsLint, following this JsLint configuration we’ve decided on.