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Force browser to download image files on click
...();
xhr.open("GET", url, true);
xhr.responseType = "blob";
xhr.onload = function(){
var urlCreator = window.URL || window.webkitURL;
var imageUrl = urlCreator.createObjectURL(this.response);
var tag = document.createElement('a');
tag.href = imageUrl;
...
How to get JSON from URL in JavaScript?
...();
xhr.open('GET', url, true);
xhr.responseType = 'json';
xhr.onload = function() {
var status = xhr.status;
if (status === 200) {
callback(null, xhr.response);
} else {
callback(status, xhr.response);
}
};
xhr.send();
};
And use it like...
Get Base64 encode file-data from Input Form
...eader = new FileReader();
reader.readAsBinaryString(file);
reader.onload = function() {
console.log(btoa(reader.result));
};
reader.onerror = function() {
console.log('there are some problems');
};
}
...
How can I listen to the form submit event in javascript?
...t;input type="submit" name="submit">
</form>
JavaScript
window.onload = function() {
var form = document.querySelector("form");
form.onsubmit = submitted.bind(form);
}
function submitted(event) {
event.preventDefault();
}
...
browser sessionStorage. share between tabs?
...application. This will work for IE
(JSP/Servlet)
In your first JSP page, onload event call a servlet (ajex call) to setup a "window.title" and event tracker in the session(just a integer variable to be set as 0 for first time)
Make sure none of the other pages set a window.title
All pages (includ...
Show an image preview before upload
...").onchange = function () {
var reader = new FileReader();
reader.onload = function (e) {
// get loaded data and render thumbnail.
document.getElementById("image").src = e.target.result;
};
// read the image file as a data URL.
reader.readAsDataURL(this.files[0]...
Include jQuery in the JavaScript Console
... and use the following line for URL:
javascript:(function(e,s){e.src=s;e.onload=function(){jQuery.noConflict();console.log('jQuery injected')};document.head.appendChild(e);})(document.createElement('script'),'//code.jquery.com/jquery-latest.min.js')
Below is the formatted code:
javascript: (funct...
Replace words in the body text
... <script type="text/javascript"> window.onload = clear(); function clear() { document.body.innerHTML = document.body.replace('ü', 'n'); } </script>
– Wahtever
Apr 5 '11 at 21...
How to save an image to localStorage and display it on the next page?
... when you call reader.readAsDataURL the e.target.result sent to the reader.onload handler will be all you need.
– James H. Kelly
Jun 24 '15 at 17:22
...
JQuery - $ is not defined
...r script is loaded before that, you should make your code run after window.onload event, like this:
window.onload = function() {
//YOUR JQUERY CODE
}
`
so, your code will run only after the window load, when all assets have been loaded. In that point, the jQuery ($) will be defined.
If you us...