I am trying to make a landing page with json. I am trying to have it so when someone clicks it goes to a page from the json file. So far I have this:
var xmlhttp = new XMLHttpRequest();
xmlhttp.onreadystatechange = function() {
if (this.readyState == 4 && this.status == 200)
{
var Link = JSON.parse(this.responseText);
document.getElementById("Link1").innerHTML = Link.title;
}
};
xmlhttp.open("GET", "link.json", true);
xmlhttp.send();
function click1(){
window.location.href = Link.link;
}
And when I click on it it gives me (from console):
(index):22 Uncaught ReferenceError: Link is not defined at click1 ((index):22) at HTMLAnchorElement.onclick ((index):8)
Assuming your JSON content has properties title and link, and that your click1 handler has been properly registered, you should be able to combine what you have into something like this:
function click1() {
var xmlhttp = new XMLHttpRequest();
xmlhttp.onreadystatechange = function() {
if (this.readyState == 4 && this.status == 200) {
var Link = JSON.parse(this.responseText);
document.getElementById("Link1").innerHTML = Link.title;
window.location.href = Link.link;
}
};
xmlhttp.open("GET", "link.json", true);
xmlhttp.send();
}
Note that setting the innerHTML of an element before window.location.href = Link.link; is somewhat pointless because updating window.location will cause a new page to load.
Related
I am trying to make an ajax call, without expecting a return value. This is supposed to trigger a function remotely.
Following code is working, but returns this error in the browser console: net::ERR_EMPTY_RESPONSE
function clearTopData() {
var xhttp = new XMLHttpRequest();
xhttp.onreadystatechange = function() {
if (this.readyState == 4 && this.status == 200) {
}
};
xhttp.open("GET", "cleartopdata", true);
xhttp.send();
}
how am I suposed to open clearopdata, without expecting data?
Getting blank screen.
I have to insert a employee card inside a div with id="container" with info from JSON file . I have done styling in 'emp' class.
load();
function load()
{
var xhttp = new XMLHttpRequest();
xhttp.onreadystatechange = function() {
if (this.readyState == 4 && this.status == 200) {
var emp=JSON.parse(xhttp.responseText);
for(var i=0;i<emp.length;i++){
var d=document.createAttribute('div');
d.className='emp';
d.innerHTML="Inforamtion";
var c=document.getElementById('container')
c.appendChild(d);
}
}
};
xhttp.open("GET", "employee.json", true);
xhttp.send();
}
You need to use var d=document.createElement('div'); instead of createAttribute(). If you open the console in the browser after running your current code it will say something like (this is in Firefox) "Uncaught DOMException: Node.appendChild: May not add an Attribute as a child".
I got this code, to simple to have any errors and still...
I have a nav, where the onclick calls for clicker(nodenr) what should load an external site in an div.
function clicker(nodenr) {
var url=links[nodenr];
console.log(nodenr);
var request = new XMLHttpRequest();
request.open('GET', ''+url+'', true);
//request.open('GET', ''url, true);
request.onreadystatechange = function (event) {
if(request.readyState == 4) {
if(request.status == 200) {
console.log("hello");
document.getElementById("content").innerHTML = request.responseText;
}
else {
document.getElementById("content").innerHTML = "Service not loading.";
}
}
};
}
What basic error have I made? Please correct me. :)
I have a problem reloading jScrollPane after I use ajax. Although this issue seems to be asked a lot, I still haven't figured it out (after spending hours on it).
So here's my javascript code:
function search(str) {
var xmlhttp;
if (window.XMLHttpRequest) {
xmlhttp = new XMLHttpRequest();
}
else {
xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
}
xmlhttp.onreadystatechange = function() {
if (xmlhttp.readyState == 4 && xmlhttp.status == 200) {
document.getElementById("searchresult").innerHTML = xmlhttp.responseText;
document.getElementById("searchresult").style.display = "inline";
$('.searchresult').jScrollPane({autoReinitialise: true});
}
}
xmlhttp.open("POST", "ajax/search.php", true);
xmlhttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
xmlhttp.send("q=" + str);
}
So although I'm reintitialising JscrollPane it still doesn't come up after the div content is being replace by ajax.
Any solution?
I managed to solve it with api getContentPane.
I added the following code in the top of the script:
$(document).ready(function() {
jQuery('.searchresult').jScrollPane({
showArrows: true,
autoReinitialise: false
});
})
And I replaced this:
document.getElementById("searchresult").innerHTML = xmlhttp.responseText;
document.getElementById("searchresult").style.display = "inline";
$('.searchresult').jScrollPane({autoReinitialise: true});
with:
api = jQuery("#searchresult").data('jsp');
api.getContentPane().html(xmlhttp.responseText);
document.getElementById("results").style.display="inline";
api.reinitialise();
here is my html:
<html><body>
page starts here
this is a test page
top:
<script id="invoc_code" type="text/javascript">
window.onload = function() {
var xhr;
if (window.XMLHttpRequest) {
xhr = new XMLHttpRequest();
} else {
xhr = new ActiveXObject("Microsoft.XMLHTTP");
}
xhr.onreadystatechange = function() {
var body = document.body;
if (xhr.readyState == 4 && xhr.status == 200) {
if(body.firstChild){
body.insertBefore(xhr.response, body.firstChild);
} else {
body.appendChild(xhr.response);
}
}
};
xhr.open("GET", "http://google.com", true);
xhr.send();
};
</script>;
page ends here
</body></html>
line body.insertBefore(xhr.response, body.firstChild); results to "NotFoundError: An attempt was made to reference a Node in a context where it does not exist". Can you please tell me what is the reason?
Thanks in advance
The insertBefore method expects a DOM element as its first parameter. If the XHR response is a HTML string, then you need to create one using this. Depending on your required DOM output you could do something like this:
var newElem = document.createElement("div");
newElem.innerHTML = xhr.response;
body.insertBefore(newElem, body.firstChild);