An Warware: Samun boolean bazuwar

Babban matsalar Get bazuwar boolean shine rashin tsaro. Duk wanda ke da damar shiga uwar garken zai iya samar da ƙimar boolean na sabani.

var randomBoolean = Math.random() >= 0.5;

Wannan layin lambar yana ba da ƙimar boolean bazuwar zuwa madaidaicin “randomBoolean”. Ƙimar boolean ko dai gaskiya ne ko ƙarya, kuma aikin Math.random() ne ya samar dashi. Wannan aikin yana dawo da lambar bazuwar tsakanin 0 da 1, kuma idan wannan lambar ta fi ko daidai da 0.5, to ƙimar boolean zata zama gaskiya. In ba haka ba, zai zama ƙarya.

Menene aji

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Aji a JavaScript samfuri ne don ƙirƙirar abubuwa.

Fadada Darasi

Ƙarfafa azuzuwan sifa ce ta JavaScript wanda ke ba ku damar ƙirƙirar azuzuwan al'ada waɗanda za a iya amfani da su a cikin lambar ku. Wannan na iya zama da amfani idan kuna buƙatar ƙirƙirar nau'in al'ada ko kuma idan kuna buƙatar ƙara takamaiman ayyuka zuwa nau'in da ke akwai.

Don ƙirƙirar ƙarin aji a JavaScript, da farko kuna buƙatar ƙirƙirar sabon fayil mai suna extend.js kuma ƙara lambar mai zuwa:

var MyClass = aiki (){}; MyClass.prototype = {}; MyClass.extend = aiki (sauran){wannan.prototype = other.prototype; };

Na gaba, kuna buƙatar ayyana kaddarorin da hanyoyin sabon ajin ku. Kuna yin haka ta ƙara kaddarori da hanyoyi zuwa abin samfurin MyClass. Ga misali:

MyClass.prototype._myMethod = aiki(){}; MyClass.prototype._anotherMethod = aiki(){}; MyClass.extend ({_myMethod: aiki(){}, _anotherMethod: aiki(){}});

A ƙarshe, kuna buƙatar yin rajistar sabon ajin ku tare da mai tara JavaScript ta ƙara layin da ke gaba zuwa lambar ku:

MyClass._register = aiki(){};