Retrieve line number of string in Ace Editor

Question

I'm trying to retrieve the line number of a given string in the text displayed in the ace editor.

1. Example: searching for "foo"
2. Return: [ 4, 5 ]
3. Condition: Line 4 and 5 in the content of the ace editor contains the "foo" string

Answer 1

Iterate over all lines and check indexOf

function findFooLineNumbers(editor, foo) {
    var lines = editor.session.doc.getAllLines()
    var fooLineNumbers = []
    for (var i = 0, l = lines.length; i < l; i++) {
        if (lines[i].indexOf(foo) != -1)
           fooLineNumbers.push(i)
    }
    return fooLineNumbers
}