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How do you show the location of an occurrence of the letter e in a string using javascript?
Goldngraham
The location of a substring within a string in JavaScript can be found using the indexOf() method of the string type.
That method will return the placement of a string as a numerical index, starting from 0.
The method takes two arguments. The first is the substring you're looking for. In this case "e." The second argument is optional, and it's the "start" argument. If you define it, you define the index from which JavaScript will start looking for the substring. By default, this index is 0 (zero.)
If you want to find all of the occurrences of a string using this method, you have to write a loop. To see a working example of that, check out the JSFiddle in the related links.
I've also attached a good lesson on JavaScript strings in PDF.
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∙ 11y ago
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