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NerdyDeedsLLC/documentWrite.detailed.js

Last active October 16, 2019 12:22
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Fix for document.write() violation. Renders the requested text at the position in the DOM where it is called, or as first element in body, if called from head or html
Raw
documentWrite.detailed.js
/**
* @license documentWrite.js 1.0.0 Copyright Nerdy Deeds LLC.
* Released under MIT license, [email protected]
* This should be inserted into the very TOP of the HEAD element,
* to intercept any accidental doc.writes prior to its inclusion.
*/
document.write=function(val, d=document){ // Override native document.write behavior
if(!val || !d) return void(0); // If we've been given no ouput value or scope, bail out
var pars = callee = [...d.querySelectorAll('script')].pop(); // Gather all the <script> tags on page, and grab the last (the callee)
while(!/body|head|html/gi.test(pars.tagName)) pars = pars.parentNode; // Iterate the DOM until we hit body, head, or html
if(pars.tagName !== 'BODY') callee = d.body.firstElementChild; // If the callee isn't within <body>, treat <body> as callee instead
if(callee) callee.insertAdjacentHTML("beforebegin", val); // Insert val immediately before callee in DOM
return val; // Return val after insertion.
}
Raw
documentWrite.js
/**
* @license documentWrite.js 1.0.0 Copyright Nerdy Deeds LLC.
* Released under MIT license, [email protected]
* This should be inserted into the very TOP of the HEAD element,
* to intercept any accidental doc.writes prior to its inclusion.
*/
document.write=function(val, d=document){
if(!val || !d) return void(0);
var pars = callee = [...d.querySelectorAll('script')].pop();
while(!/body|head|html/gi.test(pars.tagName)) pars = pars.parentNode;
if(pars.tagName !== 'BODY') lastScript = d.body.firstElementChild;
if(callee) callee.insertAdjacentHTML("beforebegin", val);
return val;
}
Raw
documentWrite.min.js
/**
* @license documentWrite.js 1.0.0 Copyright Nerdy Deeds LLC. Released under MIT license, [email protected]
* This should be inserted into the very TOP of the HEAD element, to intercept any accidental doc.writes prior to its inclusion.
*/
document.write=function(e,t=document){if(e&&t){for(var l=callee=[...t.querySelectorAll("script")].pop();!/body|head|html/gi.test(l.tagName);)l=l.parentNode;return"BODY"!==l.tagName&&(lastScript=t.body.firstElementChild),callee&&callee.insertAdjacentHTML("beforeBegin",e),e}};
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