parse用於從一個字符串中解析出json對象,如
var
str =
'{"name":"huangxiaojian","age":"23"}'
注意:單引號寫在{}外,每個屬性名都必須用雙引號,否則會拋出異常。
JSON.parse(jsonString): 在一個字符串中解析出JSON對象
var
str =
'[{"href":"baidu.com","text":"test","orgId":123,"dataType":"curry","activeClass":"haha"}]'
;
JSON.parse(str);

/*---------------------------------------------------------------------------------*/
2、JSON.stringify(obj) : 將一個JSON對象轉換成字符串
var
obj = [{
"href"
:
"baidu.com"
,
"text"
:
"test"
,
"orgId"
:123,
"dataType"
:
"curry"
,
"activeClass"
:
"haha"
}];
JSON.stringify(obj);
"[{"
href
":"
baidu.com
","
text
":"
test
","
orgId
":123,"
dataType
":"
curry
","
activeClass
":"
haha
"}]"
/*---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------*/
3、jQuery.parseJSON(jsonString) : 將格式完好的JSON字符串轉為與之對應的JavaScript對象
var
str =
'[{"href":"baidu.com","text":"test","orgId":123,"dataType":"curry","activeClass":"haha"}]'
;
jQuery.parseJSON(str);

/*---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------*/
4、JSON.parse()和jQuery.parseJSON()的區別:
有的瀏覽器不支持JSON.parse()方法,使用jQuery.parseJSON()方法時,在瀏覽器支持時會返回執行JSON.parse()方法的結果,否則會返回類似執行eval()方法的結果,以上結論參考jquery 1.9.1 得出:
parseJSON:
function
( data ) {
// Attempt to parse using the native JSON parser first
if
( window.JSON && window.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 is actual JSON
// Logic borrowed from http://json.org/json2.js
if
( rvalidchars.test( data.replace( rvalidescape,
"@"
)
.replace( rvalidtokens,
"]"
)
.replace( rvalidbraces,
""
)) ) {
return
(
new
Function(
"return "
+ data ) )();
}
}
}
jQuery.error(
"Invalid JSON: "
+ data );
},
/*---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------*/