Client-side detection of HTTP request method

Question

Is it possible to detect the HTTP request method (e.g. GET or POST) of a page from JavaScript? If so, how?

Answer 1

In a word - No

Answer 2

I don't believe so. If you need this information, I suggest including a <meta> element generated on the server that you can check with JavaScript.

For example, with PHP:

<meta id="request-method" name="request-method" content="<?php echo htmlentities($_SERVER['REQUEST_METHOD']); ?>">
<script type="text/javascript">
    alert(document.getElementById("request-method").content);
</script>

Answer 3

If you need this functionality, have the server detect what method was used and then modify something in the DOM that you can then read out later.

Answer 4

You can check the page's referrer:

document.referrer == document.URL

If it's the same page it's quite likely that the user submitted the form.

Of course this requires

• that you don't link from a page to itself (which is required for accessibility anyway)
• that the form is submitted to the very same page it's on
• that the user did not disable the referrer

Answer 5

You cant do this for a normal post/get however you can get to this info if you use an xmlhttp call and use the getResponseHeader

Answer 6

Try this

function getURIQueryString(){
    var params = {};
    var qstring = window.location.toString().substring(window.location.toString().indexOf("?") + 1);
    var regex = /([^&=]+)=([^&=]+)/g;
    var m;
    while (m = regex.exec(qstring)){
        params[decodeURIComponent(m[1])] = decodeURIComponent(m[2])       
    }
    return params
}

It usually works. For example to get a get parameters named test. Use this

getURIQueryString().test

But It is impossible to get a post request