Loading data into a database using JSON format with JavaScript

I need to extract data from a JSON String stored in a JavaScript variable and use it to generate an SQL script. How can I loop through the JSON string to produce an output like the following?

INSERT INTO table VALUES ('$var1', '$var2', '$var3', '$varN');

Is there a straightforward method to populate a table directly from a JSON string?

Here is an example of the JSON data:

{"table":[{"id":"1","name":"David","nick":"falk","year":"20"},{"id":"2","name":"Mark","nick":"master","year":"50"},{"id":"3","name":"jhon","nick":"jx","year":"20"},{"id":"4","name":"Maria","nick":"beauty","year":"20"}]}
javascriptarraysjsondatabaseloops

Answer №1

We create a variable to hold the json data

var data = {"users":[{"id":"1","name":"David","username":"falk","age":"20"},{"id":"2","name":"Mark","username":"master","age":"50"},{"id":"3","name":"John","username":"jx","age":"20"},{"id":"4","name":"Maria","username":"beauty","age":"20"}]};

Using jQuery

We iterate through the data variable which contains the users information.

 $.each(data.users,function(index, user){
    //INSERT INTO users VALUES ('$val1', '$val2', '$val3', '$valN');     
     console.log("INSERT INTO users VALUES('"+ user.id + "','"+ user.name + "','"+ user.username + "','"+ user.age +"')");
});

Check out the example on jsfiddle http://jsfiddle.net/628Cb/

Answer №2

In order to loop through the array stored in the table object, you can utilize a for loop.

var data = {"table":[{"id":"1","name":"John","nick":"j-dawg","year":"30"},{"id":"2","name":"Sarah","nick":"sassy","year":"25"},{"id":"3","name":"Chris","nick":"c-money","year":"40"},{"id":"4","name":"Emily","nick":"e-dog","year":"35"}]};
 var arr = data["table"];
 for(var i=0;i<arr.length;i++){
    var item = arr[i];
    alert(item["id"] + " "+ item["name"] + " "+ item["nick"]+ " "+item["year"]);   
    POST INTO table VALUES (item["id"], item["name"], item["nick"], item["year"]);   
}

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