Lokacin da ka cire duk sabbin layukan daga kirtani a JavaScript, a zahiri kana cire duk haruffan sararin samaniya, gami da sabbin layukan. Wannan na iya haifar da matsaloli idan kuna tsammanin za a kula da igiyar azaman raka'a ɗaya lokacin da aka wuce zuwa aiki ko aka yi amfani da ita a cikin magana.
from string var str = "Hello rn World"; // Outputs "Hello World" str = str.replace(/r?n|r/g, '');
Layin lambar yana amfani da hanyar maye gurbin don cire karya layi daga kirtani. Kalmomin yau da kullun / r?n | r/g yayi daidai da kowane nau'in karya layi, kuma kirtani mara komai" yana maye gurbin kowane wasa ba tare da komai ba.
Tips don aiki tare da layi
Akwai 'yan tukwici don kiyayewa yayin aiki tare da layi a JavaScript.
Da farko, tuna cewa layuka a JavaScript suna wakiltan abubuwa. Wannan yana nufin cewa zaku iya samun dama ga kaddarorin layi ɗaya ta amfani da alamar digo. Misali, don samun tsayin abin layin, zaku iya amfani da dukiyar tsayin.
Na biyu, ku tuna cewa ana iya raba layi zuwa nau'i biyu: layi na yau da kullun da layukan sharhi. Layukan yau da kullun layukan lamba ne kawai waɗanda ba sharhi ba. Layukan sharhi, a gefe guda, suna farawa da alamar zanta (#) kuma ana amfani da su don yin sharhin sassan lambobi. Kuna iya gano layin sharhi ta neman layin da ya fara da slash biyu (//).
A ƙarshe, tuna cewa zaku iya amfani da kadarar lambar layi don yin la'akari da takamaiman layuka a cikin lambar ku. Wannan yana da amfani musamman lokacin gyara lambar ku.
