The _.dictionary() method returns a function that will attempt to look up a field that it is given.
Syntax:
funct = _.dictionary( object );
Parameters:
- object: This method takes the object from which the field is to be searched.
Return Value: This method returns a function that will attempt to look up a field that is given.
Note: This will not work in normal JavaScript because it requires the underscore.js contrib library to be installed. Underscore.js contrib library can be installed using npm install underscore-contrib –save.
Example 1:
Javascript
// Defining underscore contrib variable var _ = require('underscore-contrib'); var ob = { gfg : "neveropen" } var gfgg = _.dictionary( ob ); console.log(gfgg("gfg")); |
Output:
neveropen
Example 2: If this function does not find any field then it will return undefined.
Javascript
// Defining underscore contrib variable var _ = require('underscore-contrib'); var ob = { gfg : "neveropen" } var gfgg = _.dictionary( ob ); console.log(gfgg("geek")); |
Output:
undefined
