TypeError: Cannot read properties of null (reading 'length')
Error message
TypeError: Cannot read properties of null (reading 'length')
What broke
The code attempted to read the 'length' property of a variable that is currently null. This typically happens when the variable was expected to hold an object or an array but was not properly initialized.
Why it broke
It broke because the variable was not assigned a valid object or array before the length property was accessed. In JavaScript, attempting to access properties of null results in a TypeError.
How to fix
To fix this, ensure that the variable is properly initialized before accessing its properties. You can add a check to confirm that the variable is not null before trying to read its length.
Code fix
if (myVariable !== null) { console.log(myVariable.length); }Explained by ErrorOracle
Prevention tip
You can add a check to confirm that the variable is not null before trying to read its length.
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