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I have the following code
let sess = session let vigilances = sess.usuario.empresasVigi || 0; let idSess = sess.sesionUsuarioSessionStorage.sesionExt || null; let balance = sess.saldosUsuarioSessionStorage.saldo || 0;
Sess is an object, but sometimes it is empty so some properties will be missing
If that happens I want the variable to be assigned the value after ||, so I have written the code above
But so far , im receiving
Cannot read property 'empresasVigi' of undefined
Answer
Use optional chaining
let vigilances = sess.usuario?.empresasVigi || 0; let idSess = sess.sesionUsuarioSessionStorage?.sesionExt || null; let balance = sess.saldosUsuarioSessionStorage?.saldo || 0;
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Optional_chaining
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