first([predicate, arg])
suckgamoni edited this page May 15, 2013
·
1 revision
Returns the first element in a sequence that satisfies a specified condition.
Parameters
predicate
Type: function(value, key, arg): boolean
A function to test each element for a condition.
arg
An external argument.
Return Value
The first element in the sequence that passes the test in the specified predicate function.
var numbers = [ 9, 34, 65, 92, 87, 435, 3, 54, 83, 23, 87, 435, 67, 12, 19 ];
var first = from(numbers).first();
console.log(first);
/*
This code produces the following output:
9
*/
var numbers = [ 9, 34, 65, 92, 87, 435, 3, 54, 83, 23, 87, 435, 67, 12, 19 ];
var first = from(numbers).first("$ > 80");
console.log(first);
/*
This code produces the following output:
92
*/