HTTP POST / GET请求PHP脚本和JSON响应

Question

I have pages that send POST/GET requests to PHP scripts on the server. All PHP scripts respond in JSON. Question is how to capture the JSON response at the client-side in JavaScript.

Example : when i submit the form register.html, i want to capture and manipulate (using Javascript) the JSON response returned from http://localhost/register.php .

Answer 1

You have to make an AJAX request. You can do this quite simply by using a library such as jquery. Or a little more difficultly just using javascript.

Using AJAX will change the current flow of your application though. This follow example is using jquery

<form onSubmit="makeRequest(); return false;"></form>

function makeRequest() {
  $.post('register.php', formDataHereAsAnObject, function(response) {
     console.log(response) // this response is your json
  });

}

Answer 2

我可以推荐http://www.json.org/js.html获取使用JSON的详细说明。

Answer 3

The moment you submit a form in the classic sense, you're out of luck. What you want is to load the JSON response from the server. To achieve this, there are a few possibilities

• Set the target of your form to an invisible iframe and do submit it, then take the JSON out of there via JS (old school)
• Start an AJAX request (via a framework or directly), that ends up having your data in a JS variable