How to convert JavaScript Array to JSON
In JavaScript, you can use JSON.stringify to convert an array or values into a JSON formatted string.
var output = {}
output[0] = "a";
output[1] = "b";
output[2] = "c";
console.log( JSON.stringify(output) );
Output
{
"0":"a",
"1":"b",
"2":"c"
}
1. jQuery Ajax Request
Often times, you need to convert the JavaScript values into JSON before AJAX POST request. For example :
$(document).ready(function () {
$("#search-form").submit(function (event) {
event.preventDefault();
// array
var search = {}
search["username"] = $("#username").val();
search["email"] = $("#email").val();
$.ajax({
type: "POST",
contentType: "application/json",
url: "/api/search",
data: JSON.stringify(search), // convert array to JSON
dataType: 'json',
cache: false,
timeout: 100000,
success: function (data) {
console.log("SUCCESS : ", data);
},
error: function (e) {
console.log("ERROR : ", e);
}
});
});
});
References
About Author
Founder of Mkyong.com, love Java and open source stuff. Follow him on Twitter. If you like my tutorials, consider make a donation to these charities.
how can I convert an array to object where the array is [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0] and the required data is {“1”: 0, “2”: 0, …}
console.log(JSON.stringify(Object.assign({},output)));
Will give:
{“0″:0,”1″:0,”2″:0,”3″:0,”4″:0,”5″:0,”6″:0,”7″:0,”8″:0,”9″:0,”10″:0,”11″:0,”12″:0,”13″:0,”14″:0,”15″:0,”16″:0,”17″:0,”18″:0,”19″:0,”20″:0,”21″:0,”22″:0,”23″:0,”24″:0,”25″:0,”26″:0,”27″:0,”28″:0,”29″:0,”30”:0}
console.log(JSON.stringify(Object.assign({},output)));