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What is a JSON-safe object?
1 answers
5 points
Reading Kyle Simpson's book You Don't Know JS: this & Object Prototypes, I have found some term: JSON-safe object.
What it is?
1 answer
1 points
It is object that can be converted to JSON without loosing any information.
That object shouldn't contain properties types that are not allowed in JSON notaiton.
Allowed are: POJO objects ({}), arrays, strings, numbers and booleans.
e.g.
xxxxxxxxxx1
var userObject1 = {name: 'John', age: 23};2
var userObject2 = JSON.parse(JSON.stringify(userObject1));3
4
// deep equals operation for userObject1 and userObject2 should return true5
6
console.log(JSON.stringify(userObject1));7
console.log(JSON.stringify(userObject2));Not JSON-safe object example:
xxxxxxxxxx1
var userObject1 = {name: 'John', age: 23, expression: /^\d^/gi};2
var userObject2 = JSON.parse(JSON.stringify(userObject1));3
4
// in this case deep equals operation for userObject1 and userObject2 should return false5
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function printObject(object) {7
var text = '';8
for (var key in object) {9
if (text) {10
text += ', ';11
}12
text += key + '=' + object[key];13
}14
console.log('{ ' + text + ' }');15
}16
17
printObject(userObject1);18
printObject(userObject2);0 commentsShow commentsAdd comment
