I have a large array, and I want to filter it based on a string I pass it. This string could be one or two characters, up to an entire string.
Here's an example array:
var data = ["bourbon", "beer", "electric"]
If I pass e, I want the result ["electric", "beer"].
How can I achieve this functionality?
Use filter with includes:
var data = ["bourbon", "beer", "electric"];
const selectByLetter = l => data.filter(s => s.includes(l));
console.log(selectByLetter("e"));.as-console-wrapper { max-height: 100% !important; top: auto; }ES5 syntax:
var data = ["bourbon", "beer", "electric"];
var selectByLetter = function(l) {
return data.filter(function(s) {
return s.indexOf(l) > -1;
});
}
console.log(selectByLetter("e"));.as-console-wrapper { max-height: 100% !important; top: auto; }
you can use underscore.
var data = ["bourbon","beer", "electric"]
var filtered = [];
var filter = function(value) {
filtered = _.filter(data, function(el) {
return el.indexOf(value)
})
return filtered;
}
console.log('filtered',filter('e'));var data = ["bourbon","beer", "electric"]
var result = data.filter(c => /e/i.test(c))
console.log('data',result);
For an O(N) solution instead of O(N^2), use a Set instead (Set.has is O(1), whereas String.prototype.includes is O(N)):
const data = ["bourbon", "beer", "electric"];
const setByData = data.reduce((a, str) => {
a[str] = new Set(str);
return a;
}, {});
console.log(
Object.entries(setByData)
.filter(([, set]) => set.has('e'))
.map(([str]) => str)
);
products_name = ['ebay','eaby','ebb','ebbe','eaab','eeb']
search_options = []
const searched_word = "eb";
for (const key in products_name)
{
const search_count = products_name[key].search(new RegExp(searched_word, "i"));
if (search_count != -1)
{
search_options.push(products_name[key])
}
}
console.log(search_options)
beerobject that you're referencing?'beer', 'electric'.