Call Javascript function from URL/address bar
JavascriptUrlJavascript Problem Overview
Is it possible to call a javascript function from the URL? I am basically trying to leverage JS methods in a page I don't have access to the source.
Something like: http://www.example.com/mypage.aspx?javascript:printHelloWorld()
I know if you put javascript:alert("Hello World"); into the address bar it will work.
I suspect the answer to this is no but, just wondered if there was a way to do it.
Javascript Solutions
Solution 1 - Javascript
There isn't from a hyperlink, no. Not unless the page has script inside specifically for this and it's checking for some parameter....but for your question, no, there's no built-in support in browsers for this.
There are however bookmarklets you can bookmark to quickly run JavaScript functions from your address bar; not sure if that meets your needs, but it's as close as it gets.
Solution 2 - Javascript
Write in address bar
javascript:alert("hi");
Make sure you write in the beginning: javascript:
Solution 3 - Javascript
You can use Data URIs.
For example:
data:text/html,<script>alert('hi');</script>
For more information visit: https://developer.mozilla.org/en-US/docs/Web/HTTP/Basics_of_HTTP/Data_URIs
Solution 4 - Javascript
/test.html#alert('heello')
test.html
<button onClick="eval(document.location.hash.substring(1))">do it</button>
Solution 5 - Javascript
you may also place the followinng
<a href='javascript:alert("hello world!");'>Click me</a>
to your html-code, and when you click on 'Click me' hyperlink, javascript will appear in url-bar and Alert dialog will show
Solution 6 - Javascript
About the window.location.hash property:
Return the anchor part of a URL.
Example 1:
//Assume that the current URL is
var URL = "http://www.example.com/test.htm#part2";
var x = window.location.hash;
//The result of x will be:
x = "#part2"
Exmaple 2:
$(function(){
setTimeout(function(){
var id = document.location.hash;
$(id).click().blur();
}, 200);
})
Example 3:
var hash = "#search" || window.location.hash;
window.location.hash = hash;
switch(hash){
case "#search":
selectPanel("pnlSearch");
break;
case "#advsearch":
case "#admin":
}
Solution 7 - Javascript
Using Eddy's answer worked very well as I had kind of the same problem. Just call your url with the parameters : "www.mypage.html#myAnchor"
Then, in mypage.html :
$(document).ready(function(){
var hash = window.location.hash;
if(hash.length > 0){
// your action with the hash
}
});
Solution 8 - Javascript
you can use like this situation:
for example, you have a page: http://www.example.com/page.php
then in that page.php, insert this code:
if (!empty($_GET['doaction']) && $_GET['doaction'] == blabla ){
echo '<script>alert("hello");</script>';
}
then, whenever you visit this url: http://www.example.com/page.php?doaction=blabla
then the alert will be automatically called.
Solution 9 - Javascript
Just use:
(function() {
var a = document.createElement("script");
a.type = "text/javascript";
a.src = "http://www.example.com/helloworld.js?" + Math.random();
document.getElementsByTagName("head")[0].appendChild(a)
})();
This basically creates a new JavaScript line in the head of the HTML to load the JavaScript URL you wish on the page itself. This seems more like what you were asking for. You can also change the a.src to the actual code, but for longer functions and stuff it becomes a problem. The source link can also link to a JavaScript file on your computer if targeted that way.
Solution 10 - Javascript
you can execute javascript from url via events
Ex: www.something.com/home/save?id=12<body onload="alert(1)"></body>
does work if params in url are there.
Solution 11 - Javascript
You can do one thing that is you can first open the link www.example.com. Then you can search: javascript:window.alert("Hello World!")