15 lines
		
	
	
		
			366 B
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
			
		
		
	
	
			15 lines
		
	
	
		
			366 B
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
| export default (function (o, c) {
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|   var proto = c.prototype;
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| 
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|   proto.weekday = function (input) {
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|     var weekStart = this.$locale().weekStart || 0;
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|     var $W = this.$W;
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|     var weekday = ($W < weekStart ? $W + 7 : $W) - weekStart;
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| 
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|     if (this.$utils().u(input)) {
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|       return weekday;
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|     }
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| 
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|     return this.subtract(weekday, 'day').add(input, 'day');
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|   };
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| }); |