如何正确修改JavaScript中的警报功能

Question

I want to check the contents of the alert before it "alerts".

I have this function:

function alert(msg) {

    // THIS WILL CHECK IF THE WORD FUNCTION IS EXISTING IN A STRING
    var searchFunction = jQuery.type(msg);

    if(searchFunction != 'function')
    {
        return;
    }
}

However, I don't know how to "alert" since I modified the alert function already.

Thanks in advance!

Answer 1

However, I don't know how to "alert" since I modified the alert function already.

Before modifying the alert, do this:

var myAlert = alert;

Now you can do myAlert("Hi, I am a alert");