how to check if a json object has a key in javascript code example
Example 1: forjs check if key in json
var json = {key1: 'value1', key2: 'value2'}
"key1" in json ? console.log('key exists') : console.log('unknown key')
"key3" in json ? console.log('key exists') : console.log('unknown key')
Example 2: check if json obj exists
if(thisSession.hasOwnProperty('merchant_id')){
}