Split string once in javascript?

Question

How can I split a string only once, i.e. make 1|Ceci n\'est pas une pipe: | Oui parse to: [\"1\", \"Ceci n\'est pas une pipe: | Oui\"]?

The

Answer 1

If the string doesn't contain the delimiter @NickCraver's solution will still return an array of two elements, the second being an empty string. I prefer the behavior to match that of split. That is, if the input string does not contain the delimiter return just an array with a single element.

var splitOnce = function(str, delim) {
    var components = str.split(delim);
    var result = [components.shift()];
    if(components.length) {
        result.push(components.join(delim));
    }
    return result;
};

splitOnce("a b c d", " "); // ["a", "b c d"]
splitOnce("a", " "); // ["a"]