Question

94

jQuery parseJSON Multidimensional-array

rated 0 times [ 95] [ 1] / answers: 1 / hits: 34772 / 11 Years ago, tue, december 10, 2013, 12:00:00

I have PHP outputting a JSON multidimensional array as follows:

{rates:[{meter:30,rate:0.15060,ppd:10.000}]}

However, I keep getting an error when trying to decode it on the JavaSCript side of things.

Uncaught TypeError: Cannot read property 'length' of null

Here is the code below for the jQuery side of things:

success: function (result) {

    console.log(result);

    $.each($.parseJSON(result), function (item, value) {

        if (item == rates) {

            $.each($.parseJSON(value), function (i, object) {

                console.log(i + = + object);

            });

        }

The 1st console log gives me the output I mentioned at the top, but for some reason i am not able to access the array as I thought I would.

Any help is greatly appreciated :)

Answers

Only authorized users can answer the question. Please sign in first, or register a free account.

ryanulyssesb

Add To Favorites

Follow

Total Points: 91

Total Questions: 105

Total Answers: 102

Location: England

Member since Tue, Sep 8, 2020

4 Years ago

answered 11 Years ago amari · Accepted Answer

You don't need to call parseJSON again on value. It's already an object

var result='{rates:[{meter:30,rate:0.15060,ppd:10.000}]}';

console.log(result);

$.each($.parseJSON(result), function (item, value) {

    if (item == rates) {

        $.each(value, function (i, object) {

            $.each(object, function (subI, subObject) {

                console.log(subI + = + subObject);

            });

        });



    }

});

Also, incase you were wondering the error was happening because you were trying to call parseJSON on an object and parseJSON expects a string so it was returning null to the each function which was then trying to do a for loop based on null.length