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I have an array and simply want to get the element at index 1.
var myValues = new Array(); var valueAtIndex1 = myValues.getValue(1); // (something like this) How can I get the value at the 1st index of my array in JavaScript?
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JavaScript Demo: Array.find() If you need to find the index of a value, use Array.prototype.indexOf() . (It's similar to findIndex() , but checks each element for equality with the value instead of using a testing function.) If you need to find if a value exists in an array, use Array.prototype.includes() .
To find the position of an element in an array, you use the indexOf() method. This method returns the index of the first occurrence the element that you want to find, or -1 if the element is not found. The following illustrates the syntax of the indexOf() method.
You can remove elements from the end of an array using pop, from the beginning using shift, or from the middle using splice. The JavaScript Array filter method to create a new array with desired items, a more advanced way to remove unwanted elements.
As others said, In Javascript array[-1] is just a reference to a property of array (like length ) that is usually undefined (because it's not evaluated to any value).
Just use indexer
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