Learn XML and AJAX (Offline)

XML
I-Xml (i-eXtensible Markup Language) iwulimi lokumaka.
I-XML yakhelwe ukugcina nokuthutha idatha.
I-Xml ikhishwe ngasekupheleni kweminyaka yama-90. yakhiwe ukuze ihlinzeke kalula futhi igcine idatha ezichazayo.
I-XML ibe Isincomo se-W3C ngoFebhuwari 10, 1998.
I-XML ayiyona indawo ye-HTML.
I-XML yakhelwe ukuthi izichaze yona ngokwayo.
I-XML yakhelwe ukuphatha idatha, hhayi ukubonisa idatha.
Omaka be-XML abachazwanga kusengaphambili. Kufanele uchaze amathegi akho.
I-XML iyinkundla ezimele futhi izimele ngolimi.

Kungani i-xml
I-Platform Independent and Language Independent: Inzuzo enkulu ye-xml ukuthi ungayisebenzisa ukuze uthathe idatha kuhlelo olufana ne-Microsoft SQL, uyiguqule ibe yi-XML bese wabelane ngaleyo XML nezinye izinhlelo nezinkundla. Ungakwazi ukuxhumana phakathi kwamapulatifomu amabili ngokuvamile anzima kakhulu.

Into eyinhloko eyenza i-XML ibe namandla ngempela ukwamukelwa kwayo ngamazwe ngamazwe. Izinkampani eziningi zisebenzisa ukuxhumana kwe-XML kusizindalwazi, ukuhlela, amaselula ezicelo zamahhovisi nokunye. Kungenxa yesici sayo esizimele senkundla.

Uma udinga ukubonisa idatha eguquguqukayo kudokhumenti yakho ye-HTML, kuzothatha umsebenzi omningi ukuhlela i-HTML isikhathi ngasinye lapho idatha ishintsha.

Nge-XML, idatha ingagcinwa kumafayela e-XML ahlukene. Ngale ndlela ungagxila ekusebenziseni i-HTML/CSS ukuze ubonise nesakhiwo, futhi uqiniseke ukuthi izinguquko kudatha eyisisekelo ngeke zidinge noma yiziphi izinguquko ku-HTML.

Ngemigqa embalwa yekhodi ye-JavaScript, ungafunda ifayela le-XML langaphandle futhi ubuyekeze okuqukethwe kwedatha yekhasi lakho lewebhu.

Emhlabeni wangempela, amasistimu ekhompuyutha nezizindalwazi ziqukethe idatha ngamafomethi angahambelani.

Idatha ye-XML igcinwa ngefomethi yombhalo ongenalutho. Lokhu kunikeza isofthiwe- kanye nendlela ezimele yehadiwe yokugcina idatha.

Lokhu kwenza kube lula kakhulu ukudala idatha engabiwa izinhlelo zokusebenza ezahlukene.

I-AJAX
I-AJAX isifinyezo se-Asynchronous JavaScript ne-XML. Kuyiqembu lobuchwepheshe obuhlobene obufana ne-JavaScript, i-DOM, i-XML, i-HTML/XHTML, i-CSS, i-XMLHttpRequest njll.

I-AJAX ikuvumela ukuthi uthumele futhi wamukele idatha ngokuhambisanayo ngaphandle kokulayisha kabusha ikhasi lewebhu. Ngakho kuyashesha.

I-AJAX ikuvumela ukuthi uthumele imininingwane ebalulekile kuphela kuseva hhayi lonke ikhasi. Ngakho-ke idatha ebalulekile kuphela evela ohlangothini lweklayenti ehanjiswa ohlangothini lweseva. Kwenza uhlelo lwakho lokusebenza lusebenzisane futhi lusheshe.

I-ajax ayiwona ubuchwepheshe kodwa iqoqo lobuchwepheshe obuhlobene. Ubuchwepheshe be-AJAX buhlanganisa:

- I-HTML/XHTML ne-CSS
- DOM
- I-XML noma i-JSON
- XMLHttpRequest
- JavaScript