Exploring the capabilities of JSON.stringify in Internet Explorer 11

Question

Exploring the capabilities of JSON.stringify in Internet Explorer 11

I encountered a puzzling issue with my JavaScript code – it works flawlessly in Google Chrome 49.0.2623, but causes my entire file to crash in Explorer 11. The problem arises when I attempt to 'Export' JavaScript objects using AJAX. Let me share the snippet of code in question:

When running in Chrome:

function AjajPostComponentLists()

{

  var myFileContent = new Uint8Array();

   var aList1 = {FixedItems:1, List:["None", "Relay #1", "Relay #2"]};
   var aList2 = {FixedItems:1, List:["None", "Input #1", "Input #2", "Input #3", "Input #4", "Input #5"]};
   var aList3 = {FixedItems:1, List:["None", "Door #1", "Door #2"]};

   // ... (I won't list them all)

   myFileContent = JSON.stringify({aList1, aList2, aList3});

   // ...
}

The resulting output is as follows:

{"aList1":{"FixedItems":1,"List":["None","Relay #1","Relay #2"]},"aList2":{"FixedItems":1,"List":["None","Input #1","Input #2","Input #3","Input #4","Input #5"]},"aList3":{"FixedItems":1,"List":["None","Door #1","Door #2"]}}

However, when attempting to run this in Explorer 11, an error message surfaces:

SCRIPT1003: ':' expected

Interestingly, the error citation points towards the ternary operator, which seems unrelated.

I made an alternate tweak by replacing curly brackets with square brackets and managed to bypass the error, albeit sacrificing certain attributes like object names in the process.

What could be causing this discrepancy between Chrome and IE? Any insights would be greatly appreciated.

Thank you!

javascript json google-chrome internet-explorer ecmascript-6

Answer 1

Answer №1

One issue that arises is the lack of support for ES6 object literal extensions in Internet Explorer (source). For example:

var text = 'some text';
var obj = { text };
console.log(obj); // { text: 'some text' }

To resolve this, you need to explicitly declare the property name for each variable:

myFileContent = JSON.stringify({
    aList1: aList1,
    aList2: aList2,
    aList3: aList3
});

To simplify this process when dealing with multiple aListX variables, consider using an array approach:

// Instead of aList1 = x, aList2 = y, let's create an array of lists
var aList = [];
aList.push({FixedItems:1, List:["None", "Relay #1", "Relay #2"]});
aList.push({FixedItems:1, List:["None", "Input #1", "Input #2", "Input #3", "Input #4", "Input #5"]});
aList.push({FixedItems:1, List:["None", "Door #1", "Door #2"]});

// ...

var aListObj = {};
for (var i = 0; i < aList.length; i++) {
    aListObj['aList' + (i + 1)] = aList[i];
}

myFileContent = JSON.stringify(aListObj);

By utilizing this method, you can avoid manually typing out each variable and achieve the desired output through iteration.

Answer 2

One issue that arises is the lack of support for ES6 object literal extensions in Internet Explorer (source). For example:

var text = 'some text';
var obj = { text };
console.log(obj); // { text: 'some text' }

To resolve this, you need to explicitly declare the property name for each variable:

myFileContent = JSON.stringify({
    aList1: aList1,
    aList2: aList2,
    aList3: aList3
});

To simplify this process when dealing with multiple aListX variables, consider using an array approach:

// Instead of aList1 = x, aList2 = y, let's create an array of lists
var aList = [];
aList.push({FixedItems:1, List:["None", "Relay #1", "Relay #2"]});
aList.push({FixedItems:1, List:["None", "Input #1", "Input #2", "Input #3", "Input #4", "Input #5"]});
aList.push({FixedItems:1, List:["None", "Door #1", "Door #2"]});

// ...

var aListObj = {};
for (var i = 0; i < aList.length; i++) {
    aListObj['aList' + (i + 1)] = aList[i];
}

myFileContent = JSON.stringify(aListObj);

By utilizing this method, you can avoid manually typing out each variable and achieve the desired output through iteration.

Answer 3

Answer №2

Thanks for your input, it has greatly improved my code as well as resolved the compatibility issues with IE. Here is a summary of the changes made:

Created a global array of objects:

var aEditableObjects = { Relay : {FixedItems:1, List:["None", "Relay #1", "Relay #2"]}, Input : {FixedItems:1, List:["None", "Input #1", "Input #2", "Input #3", "Input #4", "Input #5"]}, Door : {FixedItems:1, List:["None", "Door #1", "Door #2"]} };

Stringified the array and sent it via AJAX

myFileContent = JSON.stringify(aEditableObjects);

myFileContent = encodeURI(myFileContent); // Optional, to handle special characters
Retrieved the data through AJAX

try{aEditableObjects = JSON.parse(decodeURI(xmlhttp.responseText));}catch(e){AjajError("AjajGetComponentLists");}

Answer 4

Thanks for your input, it has greatly improved my code as well as resolved the compatibility issues with IE. Here is a summary of the changes made:

Created a global array of objects:

var aEditableObjects = { Relay : {FixedItems:1, List:["None", "Relay #1", "Relay #2"]}, Input : {FixedItems:1, List:["None", "Input #1", "Input #2", "Input #3", "Input #4", "Input #5"]}, Door : {FixedItems:1, List:["None", "Door #1", "Door #2"]} };

Stringified the array and sent it via AJAX

myFileContent = JSON.stringify(aEditableObjects);

myFileContent = encodeURI(myFileContent); // Optional, to handle special characters
Retrieved the data through AJAX

try{aEditableObjects = JSON.parse(decodeURI(xmlhttp.responseText));}catch(e){AjajError("AjajGetComponentLists");}

Answer 5

Answer №3

Experiment with

JSON.stringify([array1, array2, array3]);

and consult the documentation for more information on JSON.stringify

Answer 6

Experiment with

JSON.stringify([array1, array2, array3]);

and consult the documentation for more information on JSON.stringify

Exploring the capabilities of JSON.stringify in Internet Explorer 11

Answer №1

Answer №2

Answer №3

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