Checking for a wildcard match in an array

Question

Using the indexOf function, how can I get a positive result when searching an array for a wildcard card match such as the below? All I am currently getting is a negative result: (-1)

function test() {
    var arr = ["OTHER-REQUEST-ASFA","OTHER-REQUEST-ASFB","OTHER-REQUEST-ASFC"]
    var a = arr.indexOf("ASFB")
    alert(a)
}

score 4 · Answer 1 · answered Dec 21 '17 at 17:41

4

var arr = ["OTHER-REQUEST-ASFA","OTHER-REQUEST-ASFB","OTHER-REQUEST-ASFC"]
var a = arr.filter(s => s.includes("ASFB"));
console.log(a);

answered Dec 21 '17 at 17:41

ctwheels

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I got a syntax error with this solution. – BobbyJones Dec 21 '17 at 17:53
What is your actual code then? It works in the snippet above. If it's giving you a syntax error it's definitely something that differs between your code and mine. Copy/paste my code and it'll work. – ctwheels Dec 21 '17 at 17:55
c'est manifique – Tristanisginger Aug 24 '22 at 14:22

score 1 · Accepted Answer · answered Dec 21 '17 at 17:42

var arr = ["OTHER-REQUEST-ASFA","OTHER-REQUEST-ASFB","OTHER-REQUEST-ASFC"]
var searchTerm = "ASFB";

arr.forEach(function(str, idx) {
  if (str.indexOf(searchTerm) !== -1 ){
    console.log(arr[idx] + ' contains "' + searchTerm  + '" at index ' + idx + ' of arr');
  }

});

Psidom · Answer 3 · 2017-12-21T17:42:36.907

0

You need to loop through the array and apply indexOf to each individual string, to get a single output, you can use Array.some, which returns true if any of the element in the array contains the substring:

var arr = ["OTHER-REQUEST-ASFA","OTHER-REQUEST-ASFB","OTHER-REQUEST-ASFC"]

var a = arr.some(s => s.indexOf("ASFB") !== -1)

console.log(a)

edited Dec 21 '17 at 17:42

answered Dec 21 '17 at 17:40

Psidom

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I got a syntax error with this solution. – BobbyJones Dec 21 '17 at 17:53

Checking for a wildcard match in an array

3 Answers3