如何在HTML5中禁用按鈕-H5教程-PHP中文網

Basic Syntax

Disable Based on Conditions

Styling Disabled Buttons

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如何在HTML5中禁用按鈕

Charles William Harris

Oct 04, 2025 am 02:05 AM

html5 禁用按钮

答案：使用disabled屬性可禁用HTML5按鈕。直接在button標籤添加disabled即可使其變灰且不可點擊，支持通過JavaScript動態控制，如document.getElementById("btn").disabled = false; 並可用CSS的:disabled偽類設置樣式，提升用戶體驗。

How to disable a button in html5

To disable a button in HTML5, use the disabled attribute on the button element. When this attribute is present, the button becomes grayed out and unclickable.

Basic Syntax

Add the disabled attribute directly to the button tag:

You can also include it with a value (though not required):

Disable Based on Conditions

If you want to disable a button dynamically (for example, until a form is filled), you can use JavaScript:

This is useful for controlling user interaction based on input validation or loading states.

Styling Disabled Buttons

You can style disabled buttons using CSS. The :disabled pseudo-class helps customize their appearance:

button:disabled { opacity: 0.5; cursor: not-allowed; }

This improves user experience by clearly indicating the button is not interactive.

Basically just add disabled to the button tag — simple and effective.

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