An warware: html shigar da lambobin regex kawai

Babban matsalar da ke da alaฦ™a da shigar da HTML kawai lambobin regex shine cewa yana iya zama da wahala a tabbatar da shigar da mai amfani yadda yakamata. Regex kawai yana ba da izini ga ฦ™ayyadaddun saitin haruffa, don haka idan mai amfani ya shigar da wani abu wanda ba lamba ba, regex ba zai iya gano shi ba kuma za a karษ“i shigarwar a matsayin inganci. Bugu da ฦ™ari, idan mai amfani ya shigar da lamba tare da maki goma sama da ษ—aya ko tsarin da ba daidai ba (misali "1,000" maimakon "1000"), sa'an nan kuma regex ba zai iya gano ta ba kuma ya yarda da shi yana aiki. Wannan na iya haifar da matsalolin ฦ™asa yayin ฦ™oฦ™arin aiwatar da wannan bayanan.

<input type="text" pattern="&#91;0-9&#93;*" />

1. Wannan layin code yana haifar da abin shigar a cikin HTML.
2. An ฦ™ayyade nau'in shigarwa a matsayin "rubutu".
3. An saita sifa mai ฦ™ira zuwa "[0-9]*", wanda ke nufin cewa lambobi kawai za a iya shigar da su cikin filin rubutu.

HTML shigarwa tag

HTML da Ana amfani da tag don ฦ™irฦ™irar sarrafawar hulษ—a don nau'ikan tushen yanar gizo don karษ“ar bayanai daga mai amfani. Yana iya zama nau'i daban-daban kamar filayen rubutu, akwatunan rajista, maษ“allin rediyo, maษ“allin ฦ™addamarwa da ฦ™ari. The tag ba komai bane, yana dauke da sifofi kawai kuma bashi da alamar rufewa.

Lambobi kawai regex

Regex don daidaita lambobi kawai a cikin HTML shine: . Wannan furci zai yi daidai da kowane adadin lambobi waษ—anda aka riga aka rigaya kuma suna biye da halin farin sarari.

Ta yaya zan karษ“i lambobi kawai a shigarwar HTML

Don karษ“ar lambobi kawai a cikin shigarwar HTML, zaku iya amfani da sifa nau'in =โ€lambarโ€. Wannan zai iyakance shigarwar zuwa ฦ™imar lambobi kawai. Bugu da ฦ™ari, kuna iya amfani da ฦ™ananan sifofi don saita kewayon ฦ™imar karษ“uwa. Misali:

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