
Content
- Convert array to JSON
- Parse JSON (convert from JSON to array)
- Count JSON array length
- Do loop with JSON array
- Get data from JSON array
- Add item to JSON array
- Remove item from JSON array
Convert array to JSON
varmyArr={key:value,key2:value2};varmyJSON=JSON.stringify(myArr);
Result:
'{"key":"value","key2":"value2"}';
Parse JSON (convert from JSON to array)
varmyJSON='{"key":"value","key2":"value2"}';varmyArr=JSON.parse(myJSON);
Result:
{key:value,key2:value2};
Count JSON array length
varmyJSON='{"key":"value","key2":"value2"}';varmyArr=JSON.parse(myJSON);varjsonLength=myArr.length;
Result:
2
Do loop with JSON array
varmyJSON='{"key":"value","key2":"value2"}';varmyArr=JSON.parse(myJSON);myArr.forEach(function(nowItem){// Do things here})
Get data from JSON array
varmyJSON='{"key":"value","key2":"value2"}';varmyArr=JSON.parse(myJSON);console.log(myArr["key2"]);
Result:
value2
Add item to JSON array
varmyJSON='{"key":"value","key2":"value2"}';varmyArr=JSON.parse(myJSON);myArr["key3"]="value3";
myArr result:
{key:"value",key2:"value2",key3:"value3"}
Remove item from JSON array
varmyJSON='{"key":"value","key2":"value2"}';varmyArr=JSON.parse(myJSON);deletemyArr["key2"];
myArr result:
{"key":"value"}
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