CODEWITHSUNDEEP
javascriptjquery
Daria
Daria

Reputation: 276

Search inside an array

I am trying to implement autocomplete to my application using Local Storage. Is there way to search inside an array of words using 'LIKE %value%' condition?

var autocompleteArr = ['two', 'three', 'twenty two', 'twelve'];
mySearchMethod(autocompleteArr, 'tw'); //['two', 'twenty two', 'twelve']

Upvotes: 0

Views: 97

Answers (5)

Beri
Beri

Reputation: 11620

If you are interested in partial search use filter:

function match(value) {
  return value.match(/.*tw.*/);
}
var filtered = ['two', 'three', 'twenty two', 'twelve'].filter(match);
// filtered is ['two', 'twenty two', 'twelve']

If interested in exact match, then indexOf will do.

Upvotes: 3

Ajmal Ismail
Ajmal Ismail

Reputation: 111

You might want to do something like this

var autocompleteArr = ['two', 'three', 'twenty two', 'twelve'];
var autocomplete = function(word) {
    return autocompleteArr.filter(function(ele) {return ele.match(".*"+word+".*");})
}


autocomplete("tw") // ["two", "twenty two", "twelve"]

http://jsfiddle.net/jkn6xgr7/2/

Upvotes: 1

Gideon
Gideon

Reputation: 2014

You can use indexOf to check if a string contains another.

var autocompleteArr = ['two', 'three', 'twenty two', 'twelve'];

function mySearchMethod(haystack, needle) {

    arr = [];

    for(var i = 0; i < haystack.length; i++) {
        if (haystack[i].indexOf(needle)) {
            arr.push(haystack[i]);
        }
    }

    return arr;
}

Upvotes: 1

Henrique Barcelos
Henrique Barcelos

Reputation: 7900

You can achieve this combining regular expressions and Array.filter:

var input = ... // get the user input from somewhere
var autocompleteArr = ['two', 'three', 'twenty two', 'twelve'];
var suggestions = autocompleteArr.filter(function(el){
    return new Regexp(input).test(el);
});

If you want to match from the beginning of the typing, change this line to:

return new Regexp("^"+input).test(el);

Upvotes: 1

cbender
cbender

Reputation: 2251

function arrayContains(autocompleteArr, searchString){
  var answerArray = [];
  for(var i = 0; i < autocompleteArr.length; i++){
    if(autocompleteArr[i].indexOf(searchString) != -1){
      answerArray.push(autocompleteArr[i]);
    }
  }
  return answerArray;
}

Upvotes: 1

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