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31 lines
765 B
Markdown
31 lines
765 B
Markdown
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---
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id: f41437f1-359e-41c9-894b-e5785c29d729
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title: CommonJS
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---
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# Syntax
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``` javascript
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const ordinal = require("ordinal");
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const {days, months} = require("date-names");
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exports.formatDate = function(date, format) {
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return format.replace(/YYYY|M(MMM)?|Do?|dddd/g, tag => {
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if (tag == "YYYY") return date.getFullYear();
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if (tag == "M") return date.getMonth();
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if (tag == "MMMM") return months[date.getMonth()];
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if (tag == "D") return date.getDate();
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if (tag == "Do") return ordinal(date.getDate());
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if (tag == "dddd") return days[date.getDay()];
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});
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};
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```
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``` javascript
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const {formatDate} = require("./format-date");
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console.log(formatDate(new Date(2017, 9, 13),
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"dddd the Do"));
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// → Friday the 13th
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```
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