json example detailed tutorial_json

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Copy code The code is as follows: &lt ;/script> //Declare the json data structure directly var myJSONObject = {"bindings": [ {"ircEvent": "PRIVMSG", "method": " newURI", "regex": "^http://.*"}, {"ircEvent": "PRIVMSG", "method": "deleteURI", "regex": "^delete.*"}, {"ircEvent": "PRIVMSG", "method": "randomURI", "regex": "^random.*"} ] }; //Declaration string, can Compare the difference between json text and our normal text var normalstring='[{persons:[{name:"jordan",sex:"m",age:"40"}, {name:"bryant",sex :"m",age:"28"}, {name:"McGrady",sex:"m",age:"27"} ]}]'; var jsontext='[{"persons":[ {"name":"jordan","sex":"m","age":"40"}, {"name":"bryant","sex":"m","age":"28" }, {"name":"McGrady","sex":"m","age":"27"} ]}]';

//Call the eval function to convert to a json object, var myE = eval(normalstring); document.writeln(myE '

'); //Convert json object to string var text = JSON.stringify (myE); //Compare the difference between the converted json text and the declared text document.writeln('Converted json text:' text '

Declared json format text 'jsontext '

The normal format text of the declaration' normalstring '

');

//When security is more important, it is better to use JSON parsing . JSON parsing will only recognize JSON text and it is more secure. The parse function of json is called below to convert the text data to generate a json data structure var myData = JSON.parse(jsontext);

document.writeln(myData '

');

//The following is the operation of adding, deleting, checking and modifying the json object

//Declaring the json object

var jsonObj2= {persons:[{name:"jordan",sex:"m",age:"40"}, {name:"bryant",sex:"m",age:"28"}, {name:"McGrady" ,sex:"m",age:"27"} ]};

var persons=jsonObj2.persons; var str="";

for(var i=0;i<persons.length;i ){ var cur_person=persons[i]; str =cur_person.name "'sex is " cur_person.sex " and age is " cur_person.age "

"; } document.writeln(str); //Convert to json text var myjsonobj = JSON.stringify(jsonObj2 ); document.writeln(myjsonobj);