Push to a javascript array if it exists, if not then create it first

arrays, javascript, object

Solution

Try this:

var MyArray = [];
MyArray[StringVariableName] = MyArray[StringVariableName] || [];
MyArray[StringVariableName][StringVariableName2] = MyArray[StringVariableName][StringVariableName2] || [];
MyArray[StringVariableName][StringVariableName2].push("whatever");

Problem

Is there a way for this line to always work and not throw `TypeError: Cannot read property 'Whatever' of undefined` ``` var MyArray = []; MyArray[StringVariableName][StringVariableName2].push("whatever"); ```

Original source

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