Two ways to prevent alert from popping up_javascript techniques

Copy code The code is as follows:

Define the overloaded alert function function window.alert(str ){} into a public js file, you will no longer have to worry about alert

If you still need to be prompted, use this method to define
function window.alert(str){
/ / Open a modal dialog box here to display the str string and close it with a delay of 20ms
}