Using jquery to implement backspace in IE is equivalent to the return operation

In fact, disabling is not completely disabled. By default, the back button is clicked in each browser. As long as normal text input can be used, the back button is disabled in other cases. Let's look at the jquery implementation code:
Copy codeThe Code is as follows:
$ (Function (){
Function dokey (event ){
Var ele = event.tar get;
Var eleName = ele. nodeName;
Var flag = true;
If (eleName = "INPUT" | eleName = "TEXTAREA" | eleName = "SELECT "){
Var re = $ (ele). attr ("readonly ");
If (re ){
Flag = true;
} Else {
Flag = false;
}
}
If (event. which = 8 & flag ){
Event. preventDefault ();
Event. stopPropagation ();
}
}
$ (Document). keypress (dokey). keydown (dokey );
});