在ajax调用之前转义JSON字符串中的字符

Question

I have a JSON string

var str = '{'+
            '"name": "John Doe",'+
            '"company": [{"name": "ABC Corp"}, {"name": "XYZ Corp"}],'+
            '"salary": "$200000"'+
           '}';

I make the ajax call as

$.ajax({
     url: 'url',
     type: 'POST',
     context: document.body,
     dataType: 'json',
     data: str,
     success: function(data){},
     error: function(error){}
     });

How can I escape the double quotes inside the JSON array before making the ajax call.

Answer 1

str已经是有效的JSON（根据JSONLint），因此在通过$.ajax发送之前，您无需转义任何内容。

Answer 2

It looks like you're going the wrong way - JSON.stringify is used to turn a JSON object to a string, the method you want is JSON.parse .

So change that to:

$.ajax({
     url: 'url',
     type: 'POST',
     context: document.body,
     dataType: 'json',
     data: JSON.parse(str),
     success: function(data){},
     error: function(error){}
     });

You can also pass a string formatted as JSON to $.ajax and as your string was already valid JSON you could just skip that step entirely:

$.ajax({
     url: 'url',
     type: 'POST',
     context: document.body,
     dataType: 'json',
     data: str,
     success: function(data){},
     error: function(error){}
     });

Although you could just build it up as an object to start with if that is easier (It often is than trying to format a string!):

var postData = {
   name:'John Doe'
   ... etc
};

$.ajax({
     url: 'url',
     type: 'POST',
     context: document.body,
     dataType: 'json',
     data: postData,
     success: function(data){},
     error: function(error){}
     });