1
|
/**
|
2
|
* Checks `value` to determine whether a default value should be returned in
|
3
|
* its place. The `defaultValue` is returned if `value` is `NaN`, `null`,
|
4
|
* or `undefined`.
|
5
|
*
|
6
|
* @static
|
7
|
* @memberOf _
|
8
|
* @since 4.14.0
|
9
|
* @category Util
|
10
|
* @param {*} value The value to check.
|
11
|
* @param {*} defaultValue The default value.
|
12
|
* @returns {*} Returns the resolved value.
|
13
|
* @example
|
14
|
*
|
15
|
* _.defaultTo(1, 10);
|
16
|
* // => 1
|
17
|
*
|
18
|
* _.defaultTo(undefined, 10);
|
19
|
* // => 10
|
20
|
*/
|
21
|
function defaultTo(value, defaultValue) {
|
22
|
return (value == null || value !== value) ? defaultValue : value;
|
23
|
}
|
24
|
|
25
|
module.exports = defaultTo;
|