I want to create a function that returns true if the string has these two words: "team" and "picture".
The format of the string will be: "team_user_picture" (example) where "user" can be a different string.
I tried /team picture/ but this doesn't work for my case. How can I do that using a regular expression?
If "team" always comes before "picture", then /team.*picture/ will work.
Then the function to test that regex would be
function hasKeywords(str) {
return /team.*picture/.test(str);
}
If you want to test of the string contains both words, regardless of order:
var s = 'team_user_picture';
var re = /(team.*picture)|(picture.*team)/;
alert(re.test(s));If you want exact validation against your template, use:
/^team_.+_picture$/
This is a job for indexOf. RegEx is inefficient for this task:
function hasWords(string) {
return ~string.indexOf("picture") &&
~string.indexOf("team");
}
An even better function would be:
function contains(str, ar) {
return ar.every(function(w) {
return ~str.indexOf(w);
});
}
Now you can do:
contains("team_user_picture", ["team", "picture"])
This will check if the first string has all of the words in the array.
ES6:
const contains = (s, a) => a.every(w => s.includes(w))
alternatively:
const contains = (s, a) => a.every(w => s[
String.prototype.contains ?
'contains' : 'include'
](w))
If all you want to do is to ensure that both words are in the string, regular expressions are overkill. Just use the contains() method like this:
function check(str) {
return str.contains("team") && str.contains("picture");
}
