53 lines
1.6 KiB
JavaScript
53 lines
1.6 KiB
JavaScript
(function () {
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var newMathJax = 'https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.1/MathJax.js';
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var oldMathJax = 'cdn.mathjax.org/mathjax/latest/MathJax.js';
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var replaceScript = function (script, src) {
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//
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// Make redirected script
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//
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var newScript = document.createElement('script');
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newScript.src = newMathJax + src.replace(/.*?(\?|$)/, '$1');
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//
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// Move onload and onerror handlers to new script
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//
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newScript.onload = script.onload;
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newScript.onerror = script.onerror;
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script.onload = script.onerror = null;
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//
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// Move any content (old-style configuration scripts)
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//
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while (script.firstChild) newScript.appendChild(script.firstChild);
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//
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// Copy script id
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//
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if (script.id != null) newScript.id = script.id;
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//
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// Replace original script with new one
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//
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script.parentNode.replaceChild(newScript, script);
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//
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// Issue a console warning
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//
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console.warn('WARNING: cdn.mathjax.org has been retired. Check https://www.mathjax.org/cdn-shutting-down/ for migration tips.')
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}
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if (document.currentScript) {
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var script = document.currentScript;
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replaceScript(script, script.src);
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} else {
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//
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// Look for current script by searching for one with the right source
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//
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var n = oldMathJax.length;
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var scripts = document.getElementsByTagName('script');
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for (var i = 0; i < scripts.length; i++) {
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var script = scripts[i];
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var src = (script.src || '').replace(/.*?:\/\//,'');
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if (src.substr(0, n) === oldMathJax) {
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replaceScript(script, src);
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break;
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}
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}
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}
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})(); |