How to convert text to json object in JavaScript

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The JSON array is written in square brackets.

Like JavaScript, arrays can contain objects:

"employees": [

{"firstName": "Bill", "lastName": "Gates"}

{"firstName": "Steve", "lastName": "Jobs"}

{"firstName": "Alan", "lastName": "Turing"}

]

In the above example, the object "employees" is an array. It contains three objects.

Each object represents a record of a person (with a first and last name).

Convert JSON text to JavaScript object

The common use of JSON is to read data from a web server and then display the data in a web page.

For simplicity, you can use a string as an input demonstration.

First, create a JavaScript string that contains the JSON syntax:

Var text ='{"employees": ['+

'{"firstName": "Bill", "lastName": "Gates"},' +

'{"firstName": "Steve", "lastName": "Jobs"},' +

'{"firstName": "Alan", "lastName": "Turing"}]}'

Then, use JavaScript's built-in function JSON.parse () to convert the string to a JavaScript object:

Var obj = JSON.parse (text)

Finally, use this new JavaScript object in your page:

Example

Document.getElementById ("demo") [xss_clean] =

Obj.employees [1] .firstName + "" + obj.employees [1] .lastName

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