Searching & Testing

Methods that inspect a string's contents. Positions are 1-indexed; "not found" is 0.

.contains(substr) → boolean

Whether the string contains substr.

.containsAny(...subs) → boolean

Whether the string contains any one of the given substrings.

.startsWith(prefix) → boolean

Whether the string begins with prefix.

.endsWith(suffix) → boolean

Whether the string ends with suffix.

log "report.csv".endsWith(".csv")  // true
log "abc".containsAny("x", "b")    // true

.index(substr) → number

Position of the first occurrence of substr (1-indexed), or 0 if absent.

.lastIndex(substr) → number

Position of the last occurrence (1-indexed), or 0 if absent.

.count(substr) → number

Number of times substr appears.

log "hello world".index("o")     // 5
log "hello world".lastIndex("o") // 8
log "a-b-c".count("-")           // 2