manushifva

Posted on Jul 17, 2021

JSON + Javascript Cheatsheet.

#javascript #json #cheatsheet #webdev

Content

var myArr = {
    key: value,
    key2: value2
};

var myJSON = JSON.stringify(myArr);

Result:

'{"key":"value","key2":"value2"}';

var myJSON = '{"key":"value","key2":"value2"}';

var myArr = JSON.parse(myJSON);

Result:

{
    key: value,
    key2: value2
};

var myJSON = '{"key":"value","key2":"value2"}';

var myArr = JSON.parse(myJSON);

var jsonLength = myArr.length;

Result:

var myJSON = '{"key":"value","key2":"value2"}';

var myArr = JSON.parse(myJSON);

myArr.forEach(function(nowItem) {
    // Do things here
})

var myJSON = '{"key":"value","key2":"value2"}';

var myArr = JSON.parse(myJSON);

console.log(myArr["key2"]);

Result:

value2

var myJSON = '{"key":"value","key2":"value2"}';

var myArr = JSON.parse(myJSON);

myArr["key3"] = "value3";

myArr result:

{
    key: "value", 
    key2: "value2", 
    key3: "value3"
}

var myJSON = '{"key":"value","key2":"value2"}';

var myArr = JSON.parse(myJSON);

delete myArr["key2"];

myArr result:

{
   "key": "value"
}