Three common information prompt boxes in javascript (alert, prompt, confirm)_javascript skills

1. Warning prompt box
alert ("text").
ex.

<input type="button" onclick="disp_alert()" value="显示警告框">
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2. Confirm Prompt box (confirm, return true or false)

<input type="button" onclick="show_confirm()" value="Show a confirm box">
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If you need to introduce external Js, you need to refresh to execute
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3. Tips box (prompt returns the text of the text box)

<input type="button" onclick="disp_prompt()" value="显示提示框">

[Ctrl A select all Note: If you need to introduce external Js, you need to refresh to execute ]