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標籤：ack inpu func put pre 操作 UNC type src
<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <title></title> <style> .cls { background-color: black; } </style></head><body><input type="button" value="開/關燈" id="bt"/><script src="common.js"></script><script> my$("bt").onclick = function () { //擷取body標籤 document.body.className = document.body.className != "cls" ? "cls" : ""; };</script></body></html>
JavaScript DOM操作案例點擊按鈕實現網頁開關燈
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