Document WriteWrite document
This is a common way to insert a script to run it: document. The use of document. write() to retrieve external resources, especially at an early stage of the document, can significantly increase the time it takes to display a web page.
Strange case of document.write
document.write is strange. Adds HTML to the page wherever it is displayed. Now, it pastes its HTML right after the HTML code in which it is displayed. This is only possible if you execute it before loading the document. This deletes the page and adds only its contents. You can add contents that interrupt the remainder of the page explicitly:
Turns out the concept that it will insert its issue right after the scripts tags that contain it is important. document.write(''); on the other side, the second scripts are not executed until the injection is complete.
This means that the rest of the first execution was complete, but the second execution was locked until printC.js had a shot at running. It' worth remembering that this way of adding contents only makes real sense when the page is initially used.
When you try to document the.write file after the page is downloaded, what happens? Advertisers seem to like it because it allows them to change to load a tracked picture instead of making an a jax query when the users uses Netscape 2.
There are still all kinds of great utilities that unexplainably pack your HTML code into document.write views. Are you able to write document.write in document.write?
A JAX sync query can be loaded and pasted into the page: document.write(x.responseText); downloading the query blocks page download and inserts the contents as if it were part of the page. If this is the case, we add the page contents ourselves (that's what an empty address means), which in turn reinserts the page contents indefinitely *.
It is not in the present specification (but in older ones), but document.write can actually take several parameters. document.write('H','I'). So if it's pointless, why am I lecturing about it? That' a great one!