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How to get image size (height & width) using JavaScript?
... check the dimensions using Javascript...
const img = new Image();
img.onload = function() {
alert(this.width + 'x' + this.height);
}
img.src = 'http://www.google.com/intl/en_ALL/images/logo.gif';
This can be useful if the image is not a part of the markup.
...
Convert base64 string to ArrayBuffer
...r to blob:" + blob)
var fileReader = new FileReader();
fileReader.onload = function() {
var dataUrl = fileReader.result;
console.log("blob to dataUrl: " + dataUrl);
var base64 = dataUrl.substr(dataUrl.indexOf(',')+1)
console.log("dataUrl to base64: " + base64)...
Inputting a default image in case the src attribute of an html is not valid?
...en
t.src = url;
}
}
}
Use it like this:
window.onload = function() {
fixBrokenImages('example.com/image.png');
}
Tested in Chrome and Firefox
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How to implement a confirmation (yes/no) DialogPreference?
How can I implement a Preference that displays a simple yes/no confirmation dialog?
3 Answers
...
REST, HTTP DELETE and parameters
...ete may be invalid. You can probably imagine some scenarios yourself where confirmation of a delete is required
4 Answers
...
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...
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
...
Make Iframe to fit 100% of container's remaining height
...t;
document.getElementById('ifm').style.height = height + 'px';
}
// .onload doesn't work with IE8 and older.
if (iframe.attachEvent) {
iframe.attachEvent("onload", resizeIframe);
} else {
iframe.onload=resizeIframe;
}
window.onresize = resizeIframe;
Note: ifm is the iframe ID
pag...
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...
How do I check if file exists in jQuery or pure JavaScript?
... of the image which has not finished downloading yet. You'd have to add an onload handler for this to work. This is not a reliable approach for that exact reason.
– dudewad
Dec 21 '13 at 4:09
...