Use eval in js to generate a JSON object

For example, var json = eval ('+ ret + ')');
Suppose we use php's encode_json () on the server side to generate the string to be returned
If the generated string is [{"name": "boke" },{ "age": "23"}],
You can directly use eval ([{"name": "boke" },{ "age": "23"}]) to generate the corresponding JSON object;
If the generated string is {"name": "boke", "age": "23 "},
An error occurs when we use eval ({"name": "boke", "age": "23"}) to generate a JSON object.
, We need to write eval ({"name": "boke", "age": "23"}) in this way "})).
The eval () method is also applicable to other strings generated by the encode_json () function, including the first case.
You can also use a special
Copy codeThe Code is as follows:
Function getdata (data ){
Return (new Function ("return" + data ))();
}