Lodash _.cond method creates a function that iterates over pairs and invokes the corresponding function of the first predicate to return truthy. The predicate-function pairs are invoked with the binding and arguments of the created function.
Syntax:
_.cond(pairs);Parameters:
- pairs: [Array]The predicate-function pairs.
Return Value:
The predicate-function pairs.
Example 1: In this example, we are checking whether the given value is matching to the given condition and returning the result accordingly or not.
// Requiring the lodash library
const _ = require("lodash");
// Using _.cond() method
let func1 = _.cond([
[_.matches({ 'geeks': 1 }),
_.constant('Matches Geeks')],
[_.conforms({ 'for': _.isNumber }),
_.constant('Matches For')],
[_.stubTrue, _.constant('no match')]
]);
// Storing the Result
gfg = func1({ 'geeks': 1, 'b': 2 });
// Printing the output
console.log(gfg);
Output:
"Matches Geeks"Example 2: In this example, we are checking whether the given value is matching to the given condition and returning the result accordingly or not.
// Requiring the lodash library
const _ = require("lodash");
// Using _.cond() method
let func2 = _.cond([
[_.matches({ 'geeks': 1 }),
_.constant('Matches Geeks')],
[_.conforms({ 'for': _.isNumber }),
_.constant('Matches For')],
[_.stubTrue, _.constant('No Match')]
]);
// Storing Result
gfg1 = func2({ 'geeks': 0, 'for': 1 });
gfg2 = func2({ 'geeks': '1', 'for': '2' });
// Printing the output
console.log(gfg1);
console.log(gfg2);
Output:
"Matches For"
"No Match"