在提交之前添加 POST 参数

小开

最佳答案

To add that using Jquery:

$('#commentForm').submit(function(){ //listen for submit event
$.each(params, function(i,param){
$('<input />').attr('type', 'hidden')
.attr('name', param.name)
.attr('value', param.value)
.appendTo('#commentForm');
});


return true;
});

小开

Previous answer can be shortened and be more readable.

$('#commentForm').submit(function () {
$(this).append($.map(params, function (param) {
return   $('<input>', {
type: 'hidden',
name: param.name,
value: param.value
})
}))
});

小开

You can do a form.serializeArray(), then add name-value pairs before posting:

var form = $(this).closest('form');


form = form.serializeArray();


form = form.concat([
{name: "customer_id", value: window.username},
{name: "post_action", value: "Update Information"}
]);


$.post('/change-user-details', form, function(d) {
if (d.error) {
alert("There was a problem updating your user details")
}
});

小开

If you want to add parameters without modifying the form, you have to serialize the form, add your parameters and send it with AJAX:

var formData = $("#commentForm").serializeArray();
formData.push({name: "url", value: window.location.pathname});
formData.push({name: "time", value: new Date().getTime()});


$.post("api/comment", formData, function(data) {
// request has finished, check for errors
// and then for example redirect to another page
});

See .serializeArray() and $.post() documentation.

小开

PURE JavaScript:

Creating the XMLHttpRequest:

function getHTTPObject() {
/* Crea el objeto AJAX. Esta funcion es generica para cualquier utilidad de este tipo,
por lo que se puede copiar tal como esta aqui */
var xmlhttp = false;
/* No mas soporte para Internet Explorer
try { // Creacion del objeto AJAX para navegadores no IE
xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
} catch(nIE) {
try { // Creacion del objet AJAX para IE
xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
} catch(IE) {
if (!xmlhttp && typeof XMLHttpRequest!='undefined')
xmlhttp = new XMLHttpRequest();
}
}
*/
xmlhttp = new XMLHttpRequest();
return xmlhttp;
}

JavaScript function to Send the info via POST:

function sendInfo() {
var URL = "somepage.html"; //depends on you
var Params = encodeURI("var1="+val1+"var2="+val2+"var3="+val3);
console.log(Params);
var ajax = getHTTPObject();
ajax.open("POST", URL, true); //True:Sync - False:ASync
ajax.setRequestHeader('Content-type', 'application/x-www-form-urlencoded');
ajax.setRequestHeader("Content-length", Params.length);
ajax.setRequestHeader("Connection", "close");
ajax.onreadystatechange = function() {
if (ajax.readyState == 4 && ajax.status == 200) {
alert(ajax.responseText);
}
}
ajax.send(Params);
}

小开

You could do an ajax call.

That way, you would be able to populate the POST array yourself through the ajax 'data: ' parameter

var params = {
url: window.location.pathname,
time: new Date().getTime(),
};




$.ajax({
method: "POST",
url: "your/script.php",
data: params
});

小开

you can do this without jQuery:

    var form=document.getElementById('form-id');//retrieve the form as a DOM element


var input = document.createElement('input');//prepare a new input DOM element
input.setAttribute('name', inputName);//set the param name
input.setAttribute('value', inputValue);//set the value
input.setAttribute('type', inputType)//set the type, like "hidden" or other


form.appendChild(input);//append the input to the form


form.submit();//send with added input