Window.alert()

Window.alert() - מציגה הודעת אזהרה עם תוכן וכפתור לאישור וסגירה.

תחביר

window.alert(message);

window.alert("Hello world!");
alert("Hello world!");

שתי הדוגמאות מייצרות את ההודעה הבאה:

Image:AlertHelloWorld.png

תפקידן של תיבות ההתראה הינן להצגת הודעות שאינן דורשות תגובה מצד המשתמש, מלבד היכרות וקריאת ההודעה.

Specification	Status	Comment
HTML Living Standard The definition of 'alert()' in that specification.	Living Standard

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`alert`	Chrome Full support Yes Notes Full support Yes Notes Notes Starting with Chrome 46, this method is blocked inside an `<iframe>` unless its sandbox attribute has the value `allow-modals`.	Edge Full support 12	Firefox Full support Yes	IE Full support Yes	Opera Full support Yes Notes Full support Yes Notes Notes Starting with Opera 53, this method is blocked inside an `<iframe>` unless its sandbox attribute has the value `allow-modals`.	Safari Full support Yes	WebView Android Full support Yes Notes Full support Yes Notes Notes Starting with Chrome 46, this method is blocked inside an `<iframe>` unless its sandbox attribute has the value `allow-modals`.	Chrome Android Full support Yes Notes Full support Yes Notes Notes Starting with Chrome 46, this method is blocked inside an `<iframe>` unless its sandbox attribute has the value `allow-modals`.	Firefox Android Full support Yes	Opera Android Full support Yes Notes Full support Yes Notes Notes Starting with Opera 53, this method is blocked inside an `<iframe>` unless its sandbox attribute has the value `allow-modals`.	Safari iOS Full support Yes	Samsung Internet Android Full support Yes Notes Full support Yes Notes Notes Starting with Samsung Internet 5.0, this method is blocked inside an `<iframe>` unless its sandbox attribute has the value `allow-modals`.