// To checks if some value is numeric
is("Number", 1); // true
is("Number", 1.2); // true
is("Number", "1"); // true
is("Number", "1.2"); // true
is("Number", " 1 "); // true
is("Number", ""); // false
is("Number", " "); // false
is("Number", "One"); // false
// To checks if a string is filled
is("Present", "blank"); // true
is("Present", " \n A \t "); // true
is("Present", " "); // false
is("Present", " \n\t "); // false
// If you use an invalid function.
is("Foo", "Bar"); // 0
// Why ZERO?
// Because I haven't any space to return something useful! :p
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| function is(k,v){ | |
| return( | |
| k == 'Number' ? !isNaN(parseInt(v)) && isFinite(v) : | |
| k == 'Present' ? !(v == undefined || v == null) && v.replace(/^\s+|\s+$/g,'') != '' : | |
| 0 | |
| ) | |
| } |
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| function is(k,v){return(k=='Number'?!isNaN(parseInt(v))&&isFinite(v):k=='Present'?!(v==undefined||v==null)&&v.replace(/^\s+|\s+$/g,'')!='':0)} |
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| DO WHAT YOU WANT TO PUBLIC LICENSE | |
| Version 2, December 2004 | |
| Copyright (C) 2011 Rodrigo Serradura <http://github.com/serradura> | |
| Everyone is permitted to copy and distribute verbatim or modified | |
| copies of this license document, and changing it is allowed as long | |
| as the name is changed. |
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| { | |
| "name": "is()", | |
| "description": "Checks if a value is numeric or is filled string", | |
| "keywords": [ | |
| "string", | |
| "number", | |
| "functional" | |
| ] | |
| } |
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| <!DOCTYPE html> | |
| <title>Foo</title> | |
| <div>Expected value: <b>undefined</b></div> | |
| <div>Actual value: <b id="ret"></b></div> | |
| <script> | |
| // write a small example that shows off the API for your example | |
| // and tests it in one fell swoop. | |
| var myFunction = function(){ /* the code here should be identical to the entry. */ } | |
| document.getElementById( "ret" ).innerHTML = myFunction() | |
| </script> |
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I'm not sure if this is the same in all possible cases but it saves a lot of bytes. Also fixes the problem that your version crashes for
is('Present', 1).Edit: Save more bytes. ;-)