Cov txheej txheem:
Video: Dab tsi yog qhov syntax ntxiv chav kawm hauv jQuery?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Syntax
| Parameter | Kev piav qhia |
|---|---|
| muaj nuj nqi( qhov ntsuas , tam sim no class) | xaiv tau. Qhia meej txog kev ua haujlwm uas rov qab ib lossis ntau lub npe hauv chav kawm ntxiv qhov ntsuas - Rov qab cov qhov ntsuas txoj hauj lwm ntawm lub caij nyob rau hauv cov txheej txheem tam sim no - Rov qab cov npe tam sim no ntawm cov khoom xaiv |
Ib yam li ntawd, koj tuaj yeem nug, kev siv addClass hauv jQuery yog dab tsi?
jQuery addClass () Cov addclass () txoj kev yog siv txhawm rau ntxiv ib lossis ntau lub npe hauv chav kawm rau cov khoom xaiv. Txoj kev no yog siv tsuas yog ntxiv ib lossis ntau lub npe hauv chav kawm rau cov yam ntxwv hauv chav kawm tsis txhob tshem cov chav kawm uas twb muaj lawm. Yog tias koj xav ntxiv ntau dua ib chav kawm cais cov npe hauv chav kawm nrog qhov chaw.
Kuj Paub, removeClass yog dab tsi hauv jQuery? Cov tshem tawmClass () txoj kev yog ib txoj kev inbuilt hauv jQuery uas yog siv los tshem tawm ib lossis ntau lub npe hauv chav kawm los ntawm cov khoom xaiv.
Ib yam li ntawd, kuv yuav ntxiv cov chav kawm li cas rau ib lub caij?
Ntxiv cov npe chav kawm los ntawm kev siv JavaScript tuaj yeem ua tau ntau txoj hauv kev
- Siv. className cov cuab yeej: Cov cuab yeej no yog siv los ntxiv cov npe chav kawm rau cov khoom xaiv. Syntax: Element. className += "newClass";
- Siv. add() method: Txoj kev no yog siv los ntxiv cov npe hauv chav kawm rau cov khoom xaiv. Syntax: Element. classList.
Dab tsi yog siv qhov no hauv jQuery?
$(qhov no) yog a jQuery wrapper nyob ib ncig ntawm lub caij uas enables siv jQuery txoj kev. jQuery hu rau callback siv apply() los khi qhov no. Hu jQuery ib zaug thib ob (uas yog qhov yuam kev) ntawm qhov tshwm sim ntawm $ (qhov no) rov qab ib qho tshiab jQuery yam khoom raws li tus selector tib yam li thawj tus.
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