将内联 SVG 转换为 Base64 字符串 [英] Convert inline SVG to Base64 string
问题描述
我想将内联 SVG 图像发送到 PHP 脚本,以使用 Imagick 将其转换为 PNG.为此,我必须知道如何在内联 SVG 上获取 base64 字符串.对于画布对象,它是一个简单的.toDataURL()",但不适用于内联 SVG,因为它不是元素的全局函数.
I want to send an inline SVG image to a PHP script to Convert it to PNG with Imagick. For that I have to know how to get a base64 String out on an inline SVG. For canvas objects its a simple ".toDataURL()" but that doesn't work with inline SVGs, because its not a global function of elements.
test = function(){
var b64 = document.getElementById("svg").toDataURL();
alert(b64);
}
http://jsfiddle.net/nikolang/ccx195qj/1/
但是如何为内联 SVG 做到这一点?
But how to do it for inline SVGs?
推荐答案
使用 XMLSerializer 将 DOM 转换为一个字符串
Use XMLSerializer to convert the DOM to a string
var s = new XMLSerializer().serializeToString(document.getElementById("svg"))
然后 btoa 可以将其转换为 base64
and then btoa can convert that to base64
var encodedData = window.btoa(s);
只需添加数据 URL 介绍,即 data:image/svg+xml;base64,
就可以了.
Just prepend the data URL intro i.e. data:image/svg+xml;base64,
and there you have it.
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