Adds Date.toFirstOfWeek() method that sets the date to the first day in the week (Sunday).
Example: 6/28/2011 turns into 6/26/2011
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Set date to the first day of the week
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| Date.prototype.toFirstOfWeek = function() { | |
| // just subtract the day of the week by the date. | |
| this.setDate( this.getDate() - this.getDay() ); | |
| } |
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| Date.prototype.toFirstOfWeek=function(){this.setDate(this.getDate()-this.getDay());} |
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| DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE | |
| Version 2, December 2004 | |
| Copyright (C) 2011 YOUR_NAME_HERE <YOUR_URL_HERE> | |
| 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. | |
| DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE | |
| TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION | |
| 0. You just DO WHAT THE FUCK YOU WANT TO. |
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| { | |
| "name": "toFirstOfWeek", | |
| "description": "Sets the date to the first day of the week (Sunday)", | |
| "keywords": [ | |
| "date", | |
| "prototype", | |
| "week", | |
| "sunday", | |
| "first day of week" | |
| ] | |
| } |
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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> | |
| Date.prototype.toFirstOfWeek=function(){this.setDate(this.getDate()-this.getDay());} | |
| var date = new Date(2011, 5, 29); | |
| date.toFirstOfWeek(); | |
| // date now equals Sunday, June 26th 2011 | |
| </script> |
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