Ingxaki ephambili yokubona iziphequluli kukuba iziphequluli ezahlukeneyo zinezakhono ezahlukeneyo. Umzekelo, i-Internet Explorer 8 nangaphambili ayixhasi into yecanvas, ngoko ke into yecanvas ayizubonwa.
if (navigator.userAgent.indexOf("Chrome") != -1) {
// do something
}
Ikhowudi ihlola ukuba umsebenzisi usebenzisa isikhangeli seChrome. Ukuba zikho, ikhowudi ngaphakathi kweebrace ezigobileyo ziya kuqhuba.
Ubhaqa njani umkhangeli zincwadi
Akukho mpendulo ilinganayo kulo mbuzo, njengeyona ndlela ingcono yokubona isikhangeli kwiJavaScript ixhomekeke kwiimfuno zesicelo sakho. Nangona kunjalo, ezinye iindlela eziqhelekileyo zokubona abakhangeli zibandakanya ukusebenzisa iilayibrari zokubona umkhangeli zincwadi ezifana neModernizr okanye i-webpagetest, ukujonga ubukho bezinto ezithile zesikhangeli ezifana ne-HTML5 Canvas okanye iWebhu yomsindo, okanye ukusebenzisa into yokukhangela ukubuza ulwazi lomsebenzisi olufana nenkqubo yabo yokusebenza kunye. inguqulelo yesikhangeli.
Iibhrawuza eziphambili
Zininzi iibhrawuza ezixhasa iJavaScript. Ezona zikhangeli zidumileyo ziGoogle Chrome, Mozilla Firefox, kunye ne-Internet Explorer.
