Cov txheej txheem:
Video: Daim ntawv validation nyob rau hauv angular yog dab tsi?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Daim ntawv validation
AngularJS saib xyuas lub xeev ntawm cov daim ntawv thiab nkag teb ( nkag , textarea, xaiv), thiab cia koj ceeb toom rau tus neeg siv txog lub xeev tam sim no. AngularJS kuj tuav cov ntaub ntawv hais txog seb lawv puas tau kov, lossis hloov kho, lossis tsis tau
Ib yam li ib tug yuav nug, daim ntawv validation yog dab tsi?
Daim ntawv validation ib txwm siv los tshwm sim ntawm tus neeg rau zaub mov, tom qab tus neeg siv khoom tau nkag mus rau tag nrho cov ntaub ntawv tsim nyog thiab tom qab ntawd nias lub pob xa tawm. JavaScript muab txoj hauv kev rau validate daim ntawv cov ntaub ntawv ntawm tus neeg siv lub computer ua ntej xa mus rau lub vev xaib server. Daim ntawv validation feem ntau ua ob txoj haujlwm.
Tsis tas li ntawd, qhov sib txawv ntawm cov ntaub ntawv validation yog dab tsi? Hom kev validation
| Validation hom | Nws ua haujlwm li cas |
|---|---|
| Ntev check | Xyuas cov ntaub ntawv tsis luv lossis ntev dhau |
| Saib lub rooj | Saib cov txiaj ntsig tau txais hauv ib lub rooj |
| Kev kuaj pom | Xyuas tias cov ntaub ntawv tau nkag mus rau hauv ib daim teb |
| Kev txheeb xyuas ntau yam | Txheeb xyuas tias tus nqi poob rau hauv qhov kev teev tseg |
Yog li ntawd, kuv yuav ua li cas thiaj siv tau daim ntawv hauv angular 8?
Angular 8 Reactive Form Validation Piv txwv thiab Tutorial
- Kauj ruam 1: Hloov tshiab app. tiv thaiv.
- Kauj ruam 2: Hloov tshiab app. tiv thaiv.
- Kauj ruam 3: Tsim cov lus qhia rau lo lus zais thiab paub meej tias lo lus zais match. tsim ib cov ntaub ntawv hu ua confirm-equal-validator.
- Kauj ruam 4: Hloov tshiab app.module.ts. Muab cov cai hauv qab no rau sab app.module.ts.
- Kauj ruam 5: Khiav lub app.
Yuav ua li cas koj muab validation?
Yuav ua li cas rau validate ib tug neeg:
- Pom tau tias kev lees paub ib tus neeg txoj kev xav tsis tas yuav qhia kev pom zoo nrog nws lossis koj xav tias lawv yog.
- Tsis txhob ua tus tiv thaiv lossis muab cov lus qhia tsis tau thov.
- Kev nkag siab yuav tsum ua ntej kev cuam tshuam.
- Reflect lub Hnov.
- Qhia qhov kev paub dhau los.
Pom zoo:
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