JQuery implements a method to prevent the return of the backspace key.
This example describes how JQuery can prevent the return of the backspace key. Share it with you for your reference. The specific implementation method is as follows:
Copy codeThe Code is as follows: // Backspace in the browser is unavailable
$ (Document). keydown (function (e ){
Var keyEvent;
If (e. keyCode = 8 ){
Var d = e. srcElement | e.tar get;
If (d. tagName. toUpperCase () = 'input' | d. tagName. toUpperCase () = 'textarea '){
KeyEvent = d. readOnly | d. disabled;
} Else {
KeyEvent = true;
}
} Else {
KeyEvent = false;
}
If (keyEvent ){
E. preventDefault ();
}
});
// Only prevent Backspace from being available in the input and textarea browsers
$ (Document). keydown (function (e ){
Var keyEvent;
If (e. keyCode = 8 ){
Var d = e. srcElement | e.tar get;
If (d. tagName. toUpperCase () = 'input' | d. tagName. toUpperCase () = 'textarea '){
KeyEvent = d. readOnly | d. disabled;
}
} Else {
KeyEvent = false;
}
If (keyEvent ){
E. preventDefault ();
}
});
I hope this article will help you with jQuery programming.