Created
July 14, 2016 15:22
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| // helper functions | |
| function is_null(a) { | |
| return (a === null); | |
| } | |
| function is_undefined(a) { | |
| return (is_null(a) || typeof a == 'undefined' || a === '' || a === 'undefined'); | |
| } | |
| function is_array(a) { | |
| return (a instanceof Array); | |
| } | |
| function is_jquery(a) { | |
| return (a instanceof jQuery); | |
| } | |
| function is_object(a) { | |
| return ((a instanceof Object || typeof a == 'object') && !is_null(a) && !is_jquery(a) && !is_array(a) && !is_function(a)); | |
| } | |
| function is_number(a) { | |
| return ((a instanceof Number || typeof a == 'number') && !isNaN(a)); | |
| } | |
| function is_string(a) { | |
| return ((a instanceof String || typeof a == 'string') && !is_undefined(a) && !is_true(a) && !is_false(a)); | |
| } | |
| function is_function(a) { | |
| return (a instanceof Function || typeof a == 'function'); | |
| } | |
| function is_boolean(a) { | |
| return (a instanceof Boolean || typeof a == 'boolean' || is_true(a) || is_false(a)); | |
| } | |
| function is_true(a) { | |
| return (a === true || a === 'true'); | |
| } | |
| function is_false(a) { | |
| return (a === false || a === 'false'); | |
| } | |
| function is_percentage(x) { | |
| return (is_string(x) && x.slice(-1) == '%'); | |
| } |
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