javascript将字符串转换为数据

Question

I have JavaScript code below.

var data = "[{"PR_ID":23096,"P_ID":23014},{"PR_ID":33232,"P_ID":23014},{"PR_ID":33308,"P_ID":23014},{"PR_ID":33309,"P_ID":23014}]";

I need convert the string to an data by delete the "" surrounding the array stored as "data" in JavaScript so after convert it suppose like below:

var data = [{"PR_ID":23096,"P_ID":23014},{"PR_ID":33232,"P_ID":23014},{"PR_ID":33308,"P_ID":23014},{"PR_ID":33309,"P_ID":23014}];

How to make the convert?

Answer 1

To convert a JSON object to Javascript object use:

var data = '[{"PR_ID":23096,"P_ID":23014},{"PR_ID":33232,"P_ID":23014},{"PR_ID":33308,"P_ID":23014},{"PR_ID":33309,"P_ID":23014}]';
JSON.parse(data);

But first change the double quote to single quote, otherwise the JSON object wont be a valid JSON.

After this you can walk the array in the following way:

var jsonParsed = JSON.parse(data);

for(var val in jsonParsed) {
   if(jsonParsed.hasOwnProperty(val)) {
      // do something with the values
   }
}