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hunan-rostomyan/getCookie.ts

Created July 19, 2016 22:49
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Get a cookie by name in TypeScript
Raw
getCookie.ts
// Given a cookie key `name`, returns the value of
// the cookie or `null`, if the key is not found.
function getCookie(name: string): string {
const nameLenPlus = (name.length + 1);
return document.cookie
.split(';')
.map(c => c.trim())
.filter(cookie => {
return cookie.substring(0, nameLenPlus) === `${name}=`;
})
.map(cookie => {
return decodeURIComponent(cookie.substring(nameLenPlus));
})[0] || null;
}
@gustavonecore
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gustavonecore commented Oct 19, 2020

Since the value could be null, you should define that in the return type ;)

getCookie(name: string): string|null {

Thanks for sharing!

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