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Kā pārbaudīt "object is null or not an object"


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Kā un uz ko jāpārbauda, lai izvairītos no kļūdas: "object is null or not an object" ?

 

No tabulas šūnas ņemu vērtības

tableMalas.rows[row].cells[8].innerText

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Posted

Tas nozīmē, ka vai nu row satur skaitli lielāku vai vienādu par rindu skaitu tabula. Vai arī tajā rindā ir mazāk par 9 kolonnām. Tev jāpārbauda vai pareizi esi izrēķinājis/pieņēmis row mainīgā vērtību.

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