10 lines
		
	
	
		
			220 B
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
			
		
		
	
	
			10 lines
		
	
	
		
			220 B
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
// 20.1.2.4 Number.isNaN(number)
 | 
						|
var $export = require('./_export');
 | 
						|
 | 
						|
$export($export.S, 'Number', {
 | 
						|
  isNaN: function isNaN(number) {
 | 
						|
    // eslint-disable-next-line no-self-compare
 | 
						|
    return number != number;
 | 
						|
  }
 | 
						|
});
 |