I am currently developing a basic search algorithm in JavaScript.
var title = "Discovering the Best Book of All Time";
var search1 = "of DiscoverinG boOk Best";
var search2 = "Of TIme best all"
var search3 = "Book discovering time"
When using indexOf(), it only indicates that search1 is false, while search2 and search3 are true because the words may not be in correct order or clumped together. What approach should I take to create a search algorithm that identifies such cases?
If you're looking for a way to determine if all the words in the search query exist within the target text, regardless of case or word boundaries, then this function is for you.
function checkWords(data, target) {
var words = data.toUpperCase().split(/\s/);
if (words.length === 0) {return(false);}
var uTarget = target.toUpperCase().replace(/\s/, "");
var matchCount = 0;
for (var i = 0; i < words.length; i++) {
if (uTarget.indexOf(words[i]) != -1) {
++matchCount;
}
}
return(matchCount === words.length);
}
Keep in mind that this algorithm doesn't consider word boundaries, so searching for "an" would match with words like "and" or "answer". Adding support for word boundaries would require additional code to identify what constitutes a valid boundary between words.
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