コード帳/JavaScript - projecthikky @ ウィキ

数値のみ許す(´・ω・`)

var $num = Function("n","try{n = new Number(n);
 b = new Boolean(false);
 if( b !== n.isNaN ){Error.prototype.notInt = null;
 e = new Error();e.notInt = 'Invalid Type Error : ';
 document.body.innerText = e.notInt;}}catch(e){e.notInt;}return n");
 
 document.write( $num(10) );