The code -
"use strict";
var AJAX = function (params) {
this.server ={};
this.url = params.url;
this.method = params.method;
this.dataType = params.dataType;
this.formData = params.formData;
this.init = function(){
if(typeof XMLHttpRequest != 'undefined'){
this.server = new XMLHttpRequest();
this.server.setRequestHeader('Content-type', 'application/x-www-form-urlencoded');
this.server.setRequestHeader('Content-length', this.formData.length);
this.server.setRequestHeader('Connection', 'close');
console.log("XMLHttpRequest created.");
return true;
}
};
this.send = function(){
if(this.init()){
this.server.open(this.method, this.url, true);
this.server.send(this.formData);
}
};
};
It is throwing following error :
Error in event handler for contextMenus: InvalidStateError: Failed to execute 'setRequestHeader' on 'XMLHttpRequest': The object's state must be OPENED.
How it's being used -
var data = new FormData();
data.append('user', 'sachin');
var params = {
url : 'example.com',
method : 'post',
dataType: 'json',
formData : data
};
var backgroundWindow = chrome.extension.getBackgroundPage();
var ajax = new backgroundWindow.AJAX(params);
ajax.send();
I can't seem to figure out what's the reason behind.
The error is straight forward:
Error in event handler for contextMenus: InvalidStateError: Failed to execute 'setRequestHeader' on 'XMLHttpRequest': The object's state must be OPENED.
You need to call .open(..) before setting the request headers.
Given your code, I believe the best way would be to move the call to open in the init(..) function.
var AJAX = function (params) {
this.server ={};
this.url = params.url;
this.method = params.method;
this.dataType = params.dataType;
this.formData = params.formData;
this.init = function(){
if(typeof XMLHttpRequest != 'undefined'){
this.server = new XMLHttpRequest();
//Open first, before setting the request headers.
this.server.open(this.method, this.url, true);
//Now set the request headers.
this.server.setRequestHeader('Content-type', 'application/x-www-form-urlencoded');
//this.server.setRequestHeader('Content-length', this.formData.length);
//this.server.setRequestHeader('Connection', 'close');
console.log("XMLHttpRequest created.");
return true;
}
};
this.send = function(){
if(this.init()){
this.server.send(this.formData);
}
};
};
You probably need to open the connection after the XMLHttpRequest call and before the setRequestHeader call Instead of:
this.server = new XMLHttpRequest();
this.server.setRequestHeader('Content-type', 'application/x-www-form-urlencoded');
i think you need to do:
this.server = new XMLHttpRequest();
this.server.open(this.method, this.url, true);
this.server.setRequestHeader('Content-type', 'application/x-www-form-urlencoded');
also make sure you remove this line in the init(), like you have done above.