About the use of Json.parse (), Json.stringify (), Jquery.parsejson () _javascript Tips

1. Json.parse (jsonstring): Parsing a JSON object in a string

var str = ' [{' href ': ' baidu.com ', ' text ': ' Test ', ' OrgID ': 123, ' dataType ': ' Curry ', ' activeclass ': ' Haha '}] '; 
 
Json.parse (str); 

Results:

2 json.stringify (obj): Converts a JSON object to a string

var obj = [{"href": "baidu.com", "text": "Test", "OrgID": 123, "DataType": "Curry", "activeclass": "haha"}]; 
 
Json.stringify (obj); 

Results:

' [{' href ': ' baidu.com ', ' text ': ' Test ', ' OrgID ': 123, ' dataType ': ' Curry ', ' activeclass ': ' Haha '}] ' 

3. Jquery.parsejson (jsonstring): Converts a well-formed JSON string to its corresponding JavaScript object

var str = ' [{' href ': ' baidu.com ', ' text ': ' Test ', ' OrgID ': 123, ' dataType ': ' Curry ', ' activeclass ': ' Haha '}] '; 
 
Jquery.parsejson (str); 

Results:

The difference between 4.json.parse () and Jquery.parsejson ():

Some browsers do not support the Json.parse () method, and when the Jquery.parsejson () method is used, the results of the Json.parse () method are returned when the browser is supported, or the results of a similar implementation of the Eval () method are returned, as the above conclusions refer to jquery 1.9.1 concluded:

Parsejson:function (data) { 
  //attempt to parse using the native JSON parser the-A- 
  window. JSON && windows. Json.parse) {return 
    window. Json.parse (data); 
  } 
 
 
  if (data = = null) {return 
    data; 
  } 
 
 
  if (typeof data = = "string") { 
 
 
    //Make sure leading/trailing whitespace is removed (IE can ' t handle it) 
    data = Jquery.trim (data); 
 
 
    if (data) { 
      //Make sure the incoming data are actual JSON 
      //Logic borrowed from http://json.org/json2.js
   
    if (Rvalidchars.test data.replace (Rvalidescape, "@") 
        . Replace (Rvalidtokens, "]") 
        . Replace (rvalidbraces , "")) {return 
 
 
        (the new Function ("return" + Data)) (); 
 
 
  }} Jquery.error ("Invalid JSON:" + data); 
},
   

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