HTML DOM Option disabled 属性
HTML DOM option disabled 属性返回并修改 option 元素是否禁用。
语法
语法如下 -
1. 返回 disabled
object.disabled
2. 修改 disabled
object.disabled = true | false
示例
我们来看一个 HTML DOM option disabled 属性的示例 -
<!DOCTYPE html> <html> <head> <style> html{ height:100%; } body{ text-align:center; color:#fff; background: linear-gradient(62deg, #FBAB7E 0%, #F7CE68 100%) center/cover no-repeat; height:100%; } p{ font-weight:700; font-size:1.2rem; } .drop-down{ width:35%; border:2px solid #fff; font-weight:bold; padding:8px; } .btn{ background:#0197F6; border:none; height:2rem; border-radius:2px; width:35%; margin:2rem auto; display:block; color:#fff; outline:none; cursor:pointer; } .show{ font-size:1.5rem; font-weight:bold; } </style> </head> <body> <h1>DOM Option disabled Demo</h1> <p>Hi, Select your favourite subject:</p> <select class='drop-down' name="Drop Down List"> <option>Physics</option> <option>Maths</option> <option>Chemistry</option> <option>English</option> </select> <button onclick="disMaths()" class="btn">Disable Maths</button> <div class="show"></div> <script> function disMaths() { document.querySelector(".drop-down").options[1].disabled=true; document.querySelector(".show").innerHTML="Now you can't select Maths subject"; } </script> </body> </html>
输出
这个将产生如下输出 -
点击“禁用数学”按钮禁用数学科目,然后尝试选择数学科目。
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