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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  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 : $W) - weekStart;
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    if (this.$utils().u(input)) {
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      return weekday;
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    }
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    return this.subtract(weekday, 'day').add(input, 'day');
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  };
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}); |