The _.hasPath() method returns a boolean indicating whether there is a property at the path described by the keys given. Keys may be given as an array or as a dot-separated string.
Syntax:
_.hasPath( Object_name, key_string|array );
Parameters:
- Object_name: Object from which the value is to be searched.
- key_string | array: Given dot-separated string or array to be searched in the given object.
Return Value: This method returns a Boolean.
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 : "Computer Science Portal for Geeks" } }; var val = _.hasPath( ob, ['gfg','neveropen'] ); console.log(val); |
Output:
true
Example 2:
Javascript
// Defining underscore contrib variable var _ = require('underscore-contrib'); var ob = { gfg : { neveropen : "Computer Science Portal for Geeks" } }; var val = _.hasPath( ob, 'gfg.neveropen'); console.log(val); |
Output:
true
Example 3:
Javascript
// Defining underscore contrib variable var _ = require('underscore-contrib'); var ob = { gfg : { neveropen : "Computer Science Portal for Geeks" } }; var val = _.hasPath( ob, 'gfg.Geeks'); console.log(val); |
Output:
false
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