如何使用json数据进行循环？

Question

I'am trying to display json data with a loop.

I am getting the following results but don't know how to display them with loop.

[
    {"latitude":"23.046100780353495","longitude":"72.56860542227514"},
    {"latitude":"23.088427701737665","longitude":"72.49273109366186"},
    {"latitude":"23.061264193197644","longitude":"72.68224525381811"},
    {"latitude":"22.977212139977677","longitude":"72.52191352774389"},
    {"latitude":"23.002180435752084","longitude":"72.47590827872045"},
    {"latitude":"23.108638843843046","longitude":"72.49444770743139"}
]

I have created this loop:

var obj = JSON.parse(data);
var total = obj.length;

for (var i = 0; i < total; i++) {

    console.log([i]);

}

and tried to display the results like this:

23.046100780353495,72.56860542227514
23.088427701737665,72.49273109366186
23.061264193197644,72.68224525381811
22.977212139977677,72.52191352774389
23.002180435752084,72.47590827872045
23.108638843843046,72.49444770743139

Answer 1

Some tips:

• {} parentheses are objects , you access properties like object.property .
• [] parentheses are arrays , you access elements by indexes array[index] .

In your particular case, this should do it:

var objects_array = JSON.parse(data); // This is an array of objects.
var total = objects_array.length;

for (var i = 0; i < total; i++) {
    var obj = objects_array[i]; // This is one object from the array.
    console.log( obj.latitude + ',' + obj.longitude ); // We access object properties using a dot.
}

Answer 2

Your array already has default keys. So try something in the manner of:

var obj = jQuery.parseJSON(data);
  $.each(obj, function(key,value) {
  console.log(value.latitude, value.longitude);
}); 

Answer 3

var obj = JSON.parse(data);
var total = obj.length;

for (var i = 0; i < total; i++) {
    console.log(obj[i].latitude + ', ' + obj[i].longitude);
}

JSON values can be accessed using the .dot notation.

Here you have named an array of objects as obj . I would recommend renaming obj to a more descriptive name such as coordinates or coordinatesArray .