Babban matsalar da ke da alaƙa da abubuwan da aka ɗora akan js shine cewa yana iya rage lokacin loda gidan yanar gizon. Wannan saboda ƙarin lambar da aka loda don nuna abubuwan da ke ciki na iya ɗaukar sarari akan sabar gidan yanar gizon, kuma yana iya rage yawan aikin lodawa gabaɗaya.
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document.addEventListener("DOMContentLoaded", function(event) {
//do work
});
Wannan layin lambar yana cewa lokacin da DOMContentLoaded taron ya faru, aikin zai gudana.
Min da Max Aiki
Ayyukan min da max a cikin JavaScript suna ba ku damar nemo ƙarami ko mafi girma a cikin kewayon da aka bayar. Suna aiki ta hanyar ɗaukar dalilai guda biyu: na farko shine ƙananan iyaka, na biyu kuma shine babba. Aikin min zai dawo da mafi ƙarancin ƙima a cikin wannan kewayon, yayin da babban aikin zai dawo da mafi girman ƙimar.
Menene ele
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A cikin JavaScript, elem kalma ce mai mahimmanci wacce ke tsaye ga “bangare”.
