I have a JSON string value that corresponds to this object:
{
"id" : "122223232244",
"title" : "התרעת פיקוד העורף",
"data" : ["עוטף עזה 218","עוטף עזה 217"]
}
I am trying to extract the following value from the object above, so that the data array is joined together as a single comma separated string like this:
"עוטף עזה 218,עוטף עזה 217"
How can this be done?
This can be achieved via the join() method which is built into the Array type:
const object = {
"id" : "122223232244",
"title" : "התרעת פיקוד העורף",
"data" : ["עוטף עזה 218","עוטף עזה 217"]
}
/* Join elements of data array in object to a comma separated string */
const value = object.data.join();
console.log(value);If no separator argument is supplied, then the join() method will default to use a comma separator by default.
If the JSON was supplied in raw text via a string you can use the JSON.parse() method to extract an object from the JSON string value as a first step like so:
const json = `{"id" : "122223232244","title" : "התרעת פיקוד העורף","data" : ["עוטף עזה 218","עוטף עזה 217"]}`
/* Parse input JSON string */
const object = JSON.parse(json);
/* Join elements of data array in object to a comma separated string */
const value = object.data.join();
console.log(value);Access object properties using dot notation (e.g. obj.data) and then on the array you can use join to convert to a string with a comma in between.
const obj = {
"id" : "122223232244",
"title" : "התרעת פיקוד העורף",
"data" : ["עוטף עזה 218","עוטף עזה 217"]
}
console.log(obj.data.join(', '))It should be accessible with the name of the object and dot notation:
let obj = {
"id" : "122223232244",
"title" : "התרעת פיקוד העורף",
"data" : ["עוטף עזה 218","עוטף עזה 217"]
}
You could get this with:
obj.data
