JavaScript new requires no need to continue using _javascript tips

You also do not need to use the new Array (), use [];
Do not use new number, new String, or new Boolean. Wait a minute
Do not use the new function to create functions
Like you're going to write

Copy Code code as follows:

Frames[0].onfocus = new Function ("Document.bgcolor= ' Antiquewhite '")

That's what you should write.

Copy Code code as follows:

Frames[0].onfocus = function () {Document.bgcolor = ' antiquewhite ';};

The second way of writing allows the compiler to see the function body as soon as possible. Make the error check out as quickly as possible.
When you write
JS Code

Copy Code code as follows:

MyObj = new function () {
This.type = ' core ';
};

The time to write like this
JS Code

Copy Code code as follows:

MyObj = {
Type: ' Core '
};