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Home/ Questions/Q 3433230
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Editorial Team
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Editorial Team
Asked: May 18, 20262026-05-18T07:32:54+00:00 2026-05-18T07:32:54+00:00

I am defining a class in javascript using this… // file_a.js function class_a() {

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I am defining a class in javascript using this…

// file_a.js
function class_a() {
    this.prop1 = null;
    this.prop2 = null;
}

// file_b.js
var obj = new class_a;
// I need to check here if class_a exists

How can I do this?

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  1. Editorial Team
    Editorial Team
    2026-05-18T07:32:55+00:00Added an answer on May 18, 2026 at 7:32 am
    if (typeof class_a === 'function')
    
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