Ib tug pop-up qhov rais nyob rau hauv lub [tshem tawm]. Nws views thiab lub hom phiaj ntawm

Nws yog lub npe hu hais tias cov nplooj ntawv ntawm Internet chaw tsim rau cov hypertext markup lus uas cov browser communicates cov ntaub ntawv hais txog lub constituent ntsiab ntawm xws li ib tug sab ntawm lawv qhov chaw nyob txheeb ze rau lub qhov rais browser, thiab txhua lwm yam, qhov luaj li cas ntawm qhov kev txiav txim ntawm. Rau lub "rooj txhawb siab" ntawm qhov chaw thiab coj nws mus rau hauv ib tug yeeb yuj saib siv lam style los xij yog npaum li cas tawm, raws li ib tug txoj cai, sab nraum lub cev lub ntsiab ntawm cov nplooj ntawv - html-code. Kev siv cov html thiab css tso cai rau koj kom paub lub feem ntau ingenious cov tswv yim web designer. Txawm li cas los, xws li ib tug phab, tsis muaj teeb meem yuav ua li cas muaj yeeb yuj nws yog, yog tsis sib tham sib, uas yog, muaj peev xwm sib txuas lus nrog tus neeg siv zaum nyob rau hauv pem hauv ntej ntawm ib tug computer saib.

Tej niaj hnub site no yog tsim siv ntau programming lus, nws qhov chaw nyob rau hauv lawv belongs rau JavaScript.

JavaScript (JS) - programming lus siv los tsim kev sib tham sib web pages. Tam sim ntawd nws yuav tsum tau recalled hais tias JavaScript thiab ib tug Java - nyias hom lus uas ua txawv zog. JS hauv paus mus txog scripts - me me cov kev pab cuam uas muaj ib tug txheej ntawm tej lus txib yuav tsum tau nqa tawm nyob rau hauv qhov chaw thaum twg los muab lub sij hawm. Cov kev pab cuam yuav muab tso ncaj qha rau hauv lub cev ntawm nplooj ntawv lub ntsiab html-daim ntawv los yog muab tso cia tshaj nws nyob rau hauv ib tug nyias muaj nyias ib cov ntaub ntawv thiab xa mus rau nws c siv ib tug tshwj xeeb attribute, cim tias seb thaum lub qhov chaw ntawm cov ntaub ntawv. Nrog JS yooj yim muaj peev xwm "revive" cov nplooj ntawv ntawm qhov chaw, tsim ib tug pop-up txais tos screen, qhov tam sim no daim ntawv qhia hnub los yog moos, ib daim ntawv rau kev sau ntawv thiab xa ntawv, thiab lwm yam

Peb mam li tham ntxiv txog pop-up tawm, sau nyob rau hauv JavaScript thiab uas yog feem ntau me me duab plaub uas tshwm sim txiav rau sab saum toj ntawm lub ntsiab qhov rais browser thaum ib tug neeg ua txhaum tej manipulation (piv txwv li, thaum koj yuj dua ib lo lus, daim duab). Nyob rau hauv tej rooj plaub, ib tug pop-up qhov rais tshwm rau hauv lub screen tam sim ntawd tom qab qhib sab ntawm lub site. Lub JS yog siv peb yam ntawm cov qhov rais:

- Lub teeb liab yog siv nyob rau hauv tus neeg mob qhov twg tag nrho cov ntaub ntawv yuav tsum tau guaranteed conveyed rau lub site qhua. Ntxiv txiav txim rau ib qhov chaw nyob rau hauv xws li ib tug cov ntaub ntawv no tau tsuas yog tom qab koj nias lub "OK" khawm, tus neeg siv nws tus kheej.

- Ib tug pop-up sai yog siv tau thaum koj xav kom paub tseeb tias tus neeg siv ua ntej yuav nkag mus kawm rau cov nplooj ntawv, nkag tau tej yam ntaub ntawv.

- Ib tug kev paub qhov rais tej zaum yuav tsum muaj ntaub ntawv rau ib tug neeg pom zoo rau txhua yam. Nyob rau hauv cov ntaub ntawv no, nws yuav tsum tau mus nyem qhov "OK" tus nqi los yog "Ncua tseg".

Sau ib tsab ntawv pop-up qhov rais cia li txaus. Ua li no, koj yuav tsum muaj kev yooj yim kev txawj ntse ntawm JavaScript. Nyob rau hauv kev txiav txim tau mus xyuas daim ntawv sau kev ua hauj lwm los yog tsis tau, koj yuav tsum tau khiav tej Internet browser. Piv txwv li, lub tsab ntawv: alert ( «Nyob zoo") yuav muab tso tawm kom nyob rau hauv lub browser Internet Explorer nyob rau hauv ib lub qhov rais uas hais tias "Nyob zoo" rau saum toj ntawm nws cov ntsiab lub qhov rais. Thaum JS pab tau koj muaj peev xwm hloov lub pop-up qhov rais (nws dav, qhov siab, qhov chaw), kom paub tseeb tias nws tsis tshwm sim sai li sai tau tom qab cov qhua mus rau cov nplooj ntawv, thiab tom qab nws ua nws ib co manipulation.

Nyob rau hauv tsim lub chaw yuav tsum coj mus rau hauv tus account ib tug ntau ntawm nuances. Nws yog to taub hais tias cov nyob hauv internet pab, ntawm chav kawm, attracts cov xim ntawm nws cov qhua thiab muaj rau nws. Tiam sis peb yuav tsum tsis txhob tau ib yam nkaus thiab nqa deb sau ntawv scripts, nyob rau hauv particular, tus pop-ups. Muaj ntau cov neeg siv lawv yuav chim siab. Niaj hnub nimno browsers muab thaiv cov hlab hais xws nplooj ntawv nyob rau koj qhov chaw, uas koj kom tshem tawm cov pop-ups los ntawm kev xa tawm rau qhov tsim nyog xaiv nyob rau hauv lawv cov menus. Yog hais tias tsim nyog, koj yuav tau rov qab mus rau cov zaub mov thiab rov qab kho cov muaj peev xwm los tso saib cov ntaub ntawv los ntawm lub browser scripts.