What is the javascript syntax for retrieving an array from a JSON object?

Hey there, I was wondering how to access an array in Javascript from a JSON object structured like this:

Object {results: "success", message: "Your message has been sent successfully", error_id_array: Array[1]}
  error_id_array: Array[1]
    0: "2"
    length: 1
    __proto__: Array[0]
  message: "Your message has been sent successfully"
  results: "success"
  __proto__: Object

This question is in relation to this post about working with arrays returned from PHP scripts using AJAX. Thank you!

javascriptjson

Answer №1

According to Moo-Juice, the object mentioned is not considered valid. Below is a demonstration featuring a proper object and how one can access its properties:

var exampleObj = {
    greeting : 'Greetings!',
    colors : ['green', 'orange', 'purple'],
    displayGreeting : function() {
        var message = this.greeting;
        for (var j = 0; j < this.colors.length; j++) {
            message += ' ' + this.colors[j];
        }
        alert(message);
    }

};

exampleObj.displayGreeting();

// This will trigger a pop-up displaying 'Greetings! green orange purple'

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