Is there a way to obtain object properties after parsing a JSON string [duplicate]

Question

eg if variable jsonstring contains

{"prod_name":"GM","quantity":100,"price":54.5,"type":"Limit"}

for a code like

 var obj= JSON.parse(jsonstring);

Without knowing the string content is there a way to extract the property/ value names?

pmandell · Accepted Answer · 2014-05-06 14:27:18Z

2

You can loop through the object properties.

for ( var prop in obj ) { if ( obj.hasOwnProperty(prop) ) { console.log( prop + ': ' + obj[prop] ); } }

answered May 6, 2014 at 14:20

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4 Comments

hasOwnProperty isn't really necessary.

This way prevents 'walking' up the prototype chain, only checking the properties directly on the object itself.

@Andy, if they (or any third-party scripts) have extended the Object prototype it is necessary.

It's JSON, so I disagree.

Aditya · Accepted Answer · 2014-05-06 14:20:33Z

In JavaScript 1.8.5, Object.getOwnPropertyNames returns an array of all properties found directly upon a given object.

Object.getOwnPropertyNames ( obj )