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JS - get image width and height from the base64 code
I have a base64 img encoded that you can find here . How can I get the height and the width of it?
4 Answers
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How do I check if file exists in jQuery or pure JavaScript?
...
This works for me:
function ImageExist(url)
{
var img = new Image();
img.src = url;
return img.height != 0;
}
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fo...
Do I need Content-Type: application/octet-stream for file download?
...ine the use of Content-Disposition with other content-types, such as image/png or even text/html to indicate you want saving rather than display. It used to be the case that some browsers would ignore it in the case of text/html but I think this was some long time ago at this point (and I'm going to...
Verify if a point is Land or Water in Google Maps
...ge);
$contents = ob_get_contents();
ob_end_clean();
echo "<img src='data:image/png;base64,".base64_encode($contents)."' />";
// here is the test : I only test 3 pixels ( enough to avoid rivers ... )
$hexaColor = imagecolorat($image,0,0);
$color_tran = imagecolorsforin...
Image width/height as an attribute or in CSS? [duplicate]
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It should be defined inline. If you are using the img tag, that image should have semantic value to the content, which is why the alt attribute is required for validation.
If the image is to be part of the layout or template, you should use a tag other than the img tag and...
Google Chrome Extensions - Can't load local images with CSS
...ipt. From docs:
//Code for displaying <extensionDir>/images/myimage.png:
var imgURL = chrome.extension.getURL("images/myimage.png");
document.getElementById("someImage").src = imgURL;
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Can you provide some examples of why it is hard to parse XML and HTML with a regex? [closed]
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Actually
<img src="imgtag.gif" alt="<img>" />
is not valid HTML, and is not valid XML either.
It is not valid XML because the '<' and '>' are not valid characters inside attribute strings. They need to be escaped usin...
Images can't contain alpha channels or transparencies
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AFAIK png with transparency is not allowed. use jpg OR update your png (photoshop or whatever you using to create the png) and delete the transparency areas. if you work with shadows, use jpg, that will do no headaches.
...
Vertically align text next to an image?
...ot the text.
<!-- moved "vertical-align:middle" style from span to img -->
<div>
<img style="vertical-align:middle" src="https://placehold.it/60x60">
<span style="">Works.</span>
</div>
Tested in FF3.
Now you can use flexbox for this type of l...
How do I pass the this context to a function?
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Another basic example:
NOT working:
var img = new Image;
img.onload = function() {
this.myGlobalFunction(img);
};
img.src = reader.result;
Working:
var img = new Image;
img.onload = function() {
this.myGlobalFunction(img);
}.bind(this);
img.src = reader.re...