Video: Dab tsi yog nus muag hauv jQuery?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Cov cov kwv tij () yog ib txoj kev inbuilt hauv jQuery uas yog siv los nrhiav txhua yam cov kwv tij cov ntsiab lus ntawm cov khoom xaiv. Cov cov kwv tij yog cov uas muaj tib niam txiv keeb hauv DOM Ntoo. Rov qab tus nqi: Nws rov qab tag nrho cov cov kwv tij ntawm cov khoom xaiv.
Yog li ntawd, dab tsi yog ib tug kwv tij?
Cov cov kwv tij () txoj kev rov qab tag nrho kwv tij ntawm cov xaiv keeb . Sibling ntsiab yog cov ntsiab lus uas qhia tib niam txiv.
tus selector hauv qab no ua dab tsi $(Div? The nram qab no selector : $( " div ") tsuas yog xaiv thawj div ua element nyob rau hauv cov ntaub ntawv HTML. Cov nram qab no selector : $( " div ") xaiv tsuas yog thawj div element nyob rau hauv cov ntaub ntawv HTML.
dab tsi yog ze tshaj hauv jQuery?
Cov ze tshaj () yog ib txoj kev inbuilt hauv jQuery uas rov qab thawj tus poj koob yawm txwv ntawm cov khoom xaiv hauv DOM tsob ntoo. Txoj kev no traverse upwards los ntawm lub caij tam sim no nyob rau hauv kev tshawb fawb ntawm thawj poj koob yawm txwv ntawm lub caij.
Puas yog jQuery ib chav kawm?
Cov jQuery hasClass() txoj kev siv los xyuas seb cov ntsiab lus xaiv tau teev tseg chav kawm npe los tsis yog. Nws rov TRUE yog tias tau teev tseg chav kawm yog tam sim no nyob rau hauv ib qho ntawm cov ntsiab lus xaiv txwv tsis pub nws rov FALSE. Syntax: $(selector).
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