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The following script uses a switch statement to determine the numeric month based on the actual month. Is there a more succinct way (read: elegant, or less time to write) to accomplish the same result? Is there a down-side or up-side to either approach?

jsFiddle

var month = "May"; var m; switch(month) { case "January": m = 0; break; case "February": m = 1; break; case "March": m = 2; break; case "April": m = 3; break; case "May": m = 4; break; case "June": m = 5; break; case "July": m = 6; break; case "August": m = 7; break; case "September": m = 8; break; case "October": m = 9; break; case "November": m = 10; break; case "December": m = 11; break; default: // } console.log(m);
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3 Answers 3

Reset to default
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Just use an array.

var months = ["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"]; var m = months.indexOf('May'); // 4
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Or instead of an array, work it out from the date... no need for messy arrays

function getMonthFromString(monthName){ var d = Date.parse(mon + "1, 2000"); if( !isNaN(d) ) { return new Date(d).getMonth(); } return -1; }
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Just have your month names in an array and use indexOf to grab the index.

var monthnames = ['Jan', 'Feb', 'Mar', 'Apr']; // etc var month = 'Mar'; var monthno = monthnames.indexOf(month); console.log(monthno) // 2
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