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JavaScript में हम Date format को easily modify कर सकते हैं , generally JavaScript में 3 तरह के Date formats use होते हैं।
| Type | Example |
|---|---|
| ISO Date | 2020-05-25 (The International Standard) |
| Short Date | 05/25/2020 |
| Long Date | May 25 2015 or 25 May 2020 |
By Default JavaScript , Date को full text string format में return करती है।
File : js_date.html
<!DOCTYPE html>
<html>
<body>
<script>
let today = new Date();
document.write(today);
</script>
</body>
</html>Fri Jun 04 2021 09:01:50 GMT+0530 (India Standard Time) ISO 8601 ने Date represent करने के लिए standard mention किया हुआ है। JavaScript भी ISO 8601 syntax (YYYY-MM-DD) को prefer करती है।
हालाँकि date output आपके browser के timezone के according होगा , इसलिए किसी एक दिन के लिए ही time अलग अलग है।
File : js_iso_date.html
<!DOCTYPE html>
<html>
<body>
<script>
let d = new Date('2021-05-30');
document.write(d);
</script>
</body>
</html>Sun May 30 2021 05:30:00 GMT+0530 (India Standard Time)
अब अगर आपको सिर्फ , Year - Month या सिर्फ Year show करानी होतो , आप need के according date pass कर सकते हैं।
For Example :
/*ISO Dates (Year and Month)*/
document.write(new Date("2021-05"));
/*ISO Dates (only Year)*/
document.write(new Date("2021"));
Output
Sat May 01 2021 05:30:00 GMT+0530 (India Standard Time)
Fri Jan 01 2021 05:30:00 GMT+0530 (India Standard Time)
JavaScript में short date को MM/DD/YYYY के format में लिखा जाता है।
<script>
document.write(new Date("04/25/2021"));
</script>Output
Sun Apr 25 2021 00:00:00 GMT+0530 (India Standard Time)
? Date format DD-MM-YYYY && YYYY/MM/DD invalid formats हैं इसलिए इनके use से बचे।
Long date को ज्यादातर MMM DD YYYY के रूप में लिखा जाता है। हालाँकि इसमें Month & date का order आप change कर सकते हैं।
File : js_long_date.html
<!DOCTYPE html>
<html>
<body>
<script>
document.write(new Date("May 25 2021"));
/*change month-day order*/
document.write(new Date("25 May 2021"));
/*we can write like this*/
document.write(new Date("January 25 2021"));
/*we can also write month like this*/
document.write(new Date("Jan 25 2021"));;
</script>
</body>
</html>Tue May 25 2021 00:00:00 GMT+0530 (India Standard Time) Tue May 25 2021 00:00:00 GMT+0530 (India Standard Time) Mon Jan 25 2021 00:00:00 GMT+0530 (India Standard Time) Mon Jan 25 2021 00:00:00 GMT+0530 (India Standard Time)
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