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我想了解JS引用。在Javascript中引用变量的元素属性
<a id="ohnoes" href="https://www.kasandbox.org/programming-sounds/rpg/giant-no.mp3">What does Oh Noes say?</a>`
所以我在这里引用上面的标签在这个函数:
var ohnoesEl = document.getElementById("ohnoes");
var onOhNoesClick = function(e) {
e.preventDefault();
var audioEl = document.createElement("audio");
audioEl.src = "https://www.kasandbox.org/programming-sounds/rpg/giant-no.mp3";
audioEl.autoplay = "true";
document.body.appendChild(audioEl);
};
为什么这项工作:
audioEl.src = "https://www.kasandbox.org/programming-sounds/rpg/giant-no.mp3";
但不是这样的:
audioEl.src = ohnoesEl.href;