Alert Error Message Javascript
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Note that alert() is a method of the window object. Thus, all alert error message of the following JavaScript statements produce similar results: alert('message') window.alert('message') // reference to current window self.alert('message') // reference to current window top.alert('message') // top-level frameset parent.alert('message') // parent frame in a frameset Returned value. The alert() method does not return a value (that is, it returns undefined). See also other JavaScript dialogs: Confirm dialog Prompt dialog Print dialog Find dialog Add Favorite dialog Copyright © 1999-2011, JavaScripter.net.Show error message Code: alert("Oops... Something went wrong!"); Sweet Alert Show error message Code: sweetAlert("Oops...", "Something went wrong!", "error"); Pretty cool huh? SweetAlert automatically centers itself on the page and looks great no matter if you're using a desktop computer, mobile or tablet. It's even highly customizeable, as you can see below! More examples In these examples, we're using the shorthand function swal to call sweetAlert. A basic message Try me! swal("Here's a message!") A title with a text under Try me! swal("Here's a message!", "It's pretty, isn't it?") A success message! Try me! swal("Good job!", "You clicked the button!", "success") A warning message, with a function attached to the "Confirm"-button... Try me! swal({ title: "Are you sure?", text: "You will not be able to recover this imaginary file!", type: "warning", showCancelButton: true, confirmButtonColor: "#DD6B55", confirmButtonText: "Yes, delete it!", closeOnConfirm: false }, function(){ swal("Deleted!", "Your imaginary file has been deleted.", "success"); }); ... and by passing a parameter, you can execute something else for "Cancel". Try me! swal({ title: "Are you sure?", text: "You will not be able to recover this imaginary file!", type: "warning", showCancelButton: true, confirmButtonColor: "#DD6B55", confirmButtonText: "Yes, delete it!", cancelButtonText: "No, cancel plx!", closeOnConfirm: false, closeOnCancel: false }, function(isConfirm){ if (isConfirm) { swal("Deleted!", "Your imaginary file has been deleted.", "success"); } else { swal("Cancelled", "Your imaginary file is safe :)", "error"); } }); A message with a custom icon Try me! swal({ title: "Sweet!", text: "Here's a custom image.", imageUrl: "images/thumbs-up.jpg" }); An HTML message Try me! swal({ title: "HTML Title!", text: "A custom html message.", html: true }); A message with auto close timer Try me! swal({ title: "Auto close alert!", text: "I will close in 2 seconds.", timer: 2000, showConfirmButton: false }); A replacement for the "prompt" function Try me! swal({ title: "An input!", text: "Write something interesting:", type: "input", showCancelButton: true, closeOnConfirm: false, animation: "slide-from-top", inputPlaceholder: "Write something" }, function(inputValue){ if (inputValue === false) return false; if (inputValue === "") { swal.showInputEr