如何利用 JavaScript 設定元素周圍邊框的寬度?
如需設定邊框,請使用 outlineWidth 屬性。您可以嘗試執行以下程式碼,用 JavaScript 設定元素周圍邊框的寬度 −
示例
<!DOCTYPE html> <html> <head> <style> #box { width: 450px; background-color: orange; border: 3px solid red; margin-left: 20px; } </style> </head> <body> <p>Click below to add Outline Width.</p> <div id="box"> <p>This is a div. This is a div. This is a div. This is a div. This is a div.</p> <p>This is a div. This is a div. This is a div. This is a div. This is a div.</p> <p>This is a div. This is a div. This is a div. This is a div. This is a div.</p> </div> <br> <button type="button" onclick="display()">Set Outline Width</button> <br> <script> function display() { document.getElementById("box").style.outlineColor = "#5F5F5F"; document.getElementById("box").style.outlineStyle = "solid"; document.getElementById("box").style.outlineWidth = "7px"; } </script> </body> </html>
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