I have this functional javascript code, but I feel like there might be a more efficient way to write it. Any suggestions on simplifying this?
let searchTerm = 'Some search text';
const isMatch =
entry.title.toLowerCase().includes(searchTerm.toLowerCase()) ||
entry.description.toLowerCase().includes(searchTerm.toLowerCase()) ||
entry.keywords.toLowerCase().includes(searchTerm.toLowerCase());
return isMatch;
Here is a possible solution:
Let's say we have a search text 'Some search text' that we want to look for in the entry's title, description, and keywords.
const searchText = 'Some search text'.toLowerCase();
return [entry.title, entry.description, entry.keywords].some(entryProperty => entryProperty.toLowerCase().includes(searchText));
To check if a text exists in certain properties, you can utilize an array and the .some method:
const textLower = text.toLowerCase();
return ['title', 'description', 'keywords']
.map(prop => entry[prop].toLowerCase())
.some(s => s.includes(textLower));
If the object entry only contains those specific properties, you could opt for Object.values instead:
return Object.values(entry)
.map(s => s.toLowerCase())
.some(s => s.includes(textLower));
To simplify your code, you can utilize a concise one-line return statement that utilizes an array containing entry.description, entry.keywords, and entry.title. By applying the Array.prototype.some() method, you can determine a Boolean (true/false) value based on whether any of the specified tests are successful:
return [entry.description, entry.keywords, entry.title].some(string => string.toLowerCase().includes('Some search text'.toLowerCase());
Here's a brief breakdown of each component:
[entry.description, entry.keywords, entry.title].some(...)
This segment constructs an anonymous array consisting of entry.description, entry.keywords, and entry.title (order is irrelevant) and performs iteration using the Array.prototype.some() method. As stated on the MDN page, .some():
The
some()method evaluates if at least one element in the array meets the condition defined by the provided function.
It essentially loops through each element and generates a Boolean output (returns true if at least one element matches the condition, and false otherwise).
string => string.toLowerCase().includes('Some search text'.toLowerCase())
This represents the unnamed function within the .some() operation, accepting a single parameter string. It delivers a Boolean outcome predicated on the result of the .includes() function, which ascertains whether the lowercase version of string encompasses the lowercase variant of 'Some search text'. In essence, the aforementioned line of code interprets as follows:
If the lowercased representation of
stringincludes the lowercased form of'Some search text', then returntrue; otherwise, yieldfalse.
Hopefully, this explanation assists you!
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