Ukusondeza amanani lwenkqubo ye WEB

Kwimathematika, kukho izinto ezithile xa akufuneki ukuba ngendlela epheleleyo inani, okanye ukuphazamisa ngenxa nakwenzeka yokufumanisa. iimeko ezinjalo zenzeke ngexesha lokusebenza, umz, kunye nemisebenzi motion ezintsonkothileyo.

Ukusondeza ukuya umqondiso - kuba replacement lwakhe olusondeleyo ngokwexabiso kongezwe amaqanda yokugqibela ekupheleni.

iqhekeza Natural ukuze phantsi nokusebenza namaqondo okuchaneka: .. Amashumi, amakhulu, amawaka, njl Kuxhomekeka iqondo efunekayo okuchaneka kuyimfuneko endaweni inani Ngama, ibekwe obhobhozayo, nto leyo elirhangqiweyo. unokuthelekelela ukusebenza imizekelo ezilula.

Ngoko, xa usondelisa up inani zamashumi, kufuneka indawo digit zero kwiyunithi ekubhobhozeni. Ngelo xesha ngokusondeza ukuya amakhulu - kufuneka esikhundleni kunye amashumi nemivo.

Lo msebenzi kubandakanya ukufumana amaxabiso uqikelelo yinguqu.

amanani PHP Ukusindeza

Nangona PHP ulwimi ilulwimi, emafini, yenzelwe lula ubuninzi umsebenzi nokudalwa WEB-amaphepha kunye izicelo, oku kwakhona uqulathe inani lemisebenzi yokusebenza amabinzana zemathematika. Baya ukuthunga kwakhona sondeza le meko zophuhliso.

imisebenzi PHP

In PHP inikezela imisebenzi emithathu ngenxa ngokusondeza: ngeenxa zonke, CEIL osezantsi. Eyokuqala kukuba ulisondezayo elipheleleyo eliphantsi. Okwesibini - ngokufanayo nje yokuqala, kodwa ngendlela enkulu. Okwesithathu - phansi.

Round () umsebenzi icwangcisa lwesivakalisi ilandelayo:

ziyabuya ngeenxa (ixabiso lokudada [, int ngendlela])

Eyokuqala i parameter ibonisa inani apho kwenzeka ukuguqulwa. Okwesibini, njengoko inokukhethwa, libonisa ukuba ngqo apho ukuqoqa lwamanani.

Umzekelo ngokusebenzisa umsebenzi:

$ Roun = ngeenxa (3.8); // 4
$ Roun = ngeenxa (3.15); // 3
$ Roun = ngeenxa (5.5); // 6
$ Roun = ngeenxa (8.499); // 8
$ Roun = ngeenxa (2.46,1); // 2.5
$ Roun = ngeenxa (3.7384,3); // 3,738
$ Roun = ngeenxa (1939 -1); // 1940
$ Roun = ngeenxa (2.5,1); // 2.5
$ Roun = ngeenxa (1444 -2); // 1400

Ukusondeza inani efunekayo kwiindawo ezimbini wokugqibela:

$ Roun = ngeenxa (3.467,2); // 3,47

Ukusondeza inani abanqwenelayo ixabiso elipheleleyo:

$ Roun = ngeenxa (4.827); // 5

Ukuba ufuna ukufumana inani ngeenxa ngendlela enkulu, kufuneka usebenzise CEIL () umsebenzi ikhankanya i lwesivakalisi:

CEIL edadayo (ixabiso lokudada)

Lo msebenzi kuyimfuneko ukuba kudlule parameter enye kuphela iqulethe inani iqhezu.

Umzekelo ngokusebenzisa umsebenzi:

$ CEI = CEIL (4.7); // 5
$ CEI = CEIL (4.001); // 4
$ CEI = CEIL (6.5); // 7
$ CEI = CEIL (3.0); // 3

Ukuba ufuna ukufumana ukuqoqa kwamanani kwicala kancinane

sebenzisa kumgangatho () umsebenzi icwangcisa lwesivakalisi:

umgangatho edadayo (ixabiso lokudada)

Lo msebenzi kuyafana kowangaphambili, ngaphandle ukuba kwimijikelo wadlula kuyo inani iqhezu ukuya ixabiso elipheleleyo asezantsi.

Umzekelo ngokusebenzisa umsebenzi:

$ Okr = kumgangatho (4.99); // 4
$ Okr = kumgangatho (5.023); // 5
$ Okr = kumgangatho (6.4); // 6
$ Okr = kumgangatho (7.0); // 7

amanani JavaScript Ukusindeza

Ngo-JavaScript, njengokuba PHP, kukho umsebenzi ngenxa ngokusondeza amanani a. Bafana kwimisebenzi PHP efana isihloko, kunye nomxholo; ngaphandle ngenxa yokuba kuthiwe iindlela i Math into.

JavaScript into ebomini ulwimi akuboni lokuprograma. Oku kuthetha ezinye iimpawu asebenza functionality. Thina abanomdla imisebenzi ngokusondeza amanani kunye neempawu zazo ibandakanywa Math into. Kwaye ukuba baye kubabiza emva igama lento kufuneka ukhankanye nomsebenzisi umnxeba "." Kwaye ngoko ke igama lesakhiwo. Ngokufanayo, kufuneka ukhankanye, kwaye amaxabiso kudlula kule propati.

umzekelo:

kodityaniso ( 'Math.floor (125.6768) =' + Math.floor (125.6768));

Ziza kubonisa lo ipop up-window 125.

Enoba kwenzeka ntoni na, nokuba kwabonakala Ekuqaleni ukuntsonkotha esebenza ngeelwimi into ebomini akayi kuba nayiphi na ingxaki ukusebenzisa umsebenzi JavaScript.