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Javascript function to filter a an array of strings based on starting letters of the strings in the array

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Last Modified: 2018-09-19
I need help writing a Javascript function which will take a string as an arugment and then filter out an array of strings starting with the string I pass as an argument.
So if I have the following array:
let words = ['simple', 'single', 'side', 'sacked', 'apple', 'orange']
I need a javascript funtion that will look at every string in this array, and give me a second array called myFilteredWords which start with the letters 'si" - assumuming that I pass 'si" as an argument to the funtion.
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