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Editorial Team
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Asked: 2026-05-24T18:21:44+00:00

<button onclick=alert(‘Hello’); return false;>Hello</button> What is the return false part supposed to do? Also,

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<button onclick="alert('Hello'); return false;">Hello</button>

What is the return false part supposed to do? Also, what would return true do if it were there?

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1 Answer

  1. Editorial Team

    The default button type is submit, so <button> is the same as <button type="submit"> (except on IE). The return false stops the default button action so it will stop form submission from happening.

    You can avoid that by defining the button type explicitly

    <button type="button" onclick="alert('Hello');">Hello</button>
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