Method of capturing Console.log () output in JS

Source: Internet
Author: User

We know that Console.log () can export the information to the debugger for developers to view. But what if we want to get the output of Console.log () in JS? In fact, it is not difficult to save the original Console.log, and then replace it with another implementation. The code is as follows:

1 2 3 4 5 6 7 8 var Lastlog; Console.oldlog = Console.log; Console.log = function (str) {console.oldlog (str); lastlog = str;} console.log ("Hello, Neo"); document.write (Lastlog);

At this time Lastlog is "Hello, Neo".

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