Click here to view my JSFiddle example
function testing() {
foo = canvas.getObjects();
bar = JSON.stringify(canvas.getObjects());
console.log(foo);
console.log(bar);
}
After examining my JSFiddle link above, it appears that JSON.stringify() is altering the "x1", "y1", "x2", and "y2" properties, and I'm currently unsure as to why this is happening.
According to the information provided by (Mozilla) in the JSON.stringify documentation (https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/JSON/stringify#toJSON_behavior)
Explanation of toJSON() method
When an object being converted to a string has a toJSON property that is a function, the toJSON() method dictates how the object is stringified. Instead of serializing the entire object, the value that the toJSON() method returns upon execution will be serialized. For instance:
If you execute the following code, you should receive similar outcomes
function testing() {
foo = canvas.getObjects()[0];
bar = JSON.stringify(canvas.getObjects()[0]);
console.log(foo.toJSON());
console.log(bar);
}
Alternatively, by setting the toJSON property to undefined (although this might cause issues with fabric.js unless performed on a clone of the object - I have directly applied it to the object below)
function testing() {
foo = canvas.getObjects();
bar = JSON.stringify(canvas.getObjects().map(function (o) {
o.toJSON = undefined;
return o
}));
console.log(foo);
console.log(bar);
}
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