en.javascript.info/1-js/4-data-structures/7-array/5-array-input-sum/task.md

importance: 4

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Sum input numbers

Write the function sumInput() that:

• Asks the user for values using prompt and stores the values in the array.
• Finishes asking when the user enters a non-numeric value, an empty string, or presses "Cancel".
• Calculates and returns the sum of array items.

P.S. A zero 0 is a valid number, please don't stop the input on zero.

[demo]