Do you need to continue using javascript new_javascript tips

You don’t need to use new Array(), use [];
Don’t use new Number, new String, or new Boolean. etc.
Don’t use new Function to create functions
For example, if you want to write

Copy code The code is as follows:

frames[0].onfocus = new Function("document.bgColor ='antiquewhite'")

You should write like this

Copy the code The code is as follows:

frames[0].onfocus = function () {document.bgColor = 'antiquewhite';};,

The second way of writing can make the compiler see it as early as possible function body. This allows errors to be detected as quickly as possible.
When you write
Js code

Copy the code The code is as follows:

myObj = new function () {
this.type = 'core';
}; When

, write the
Js code like this

Copy code The code is as follows:

myObj = {
type: 'core'
};