<input type="button" />
buttons will not submit a form - they don't do anything by default. They're generally used in conjunction with JavaScript as part of an AJAX application.
<input type="submit">
buttons will submit the form they are in when the user clicks on them, unless you specify otherwise with JavaScript.
与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…