close
按鈕內容轉換
<script type="text/javascript">
//按鈕變換
var toggleBtn = document.getElementById("plus");
toggleBtn.addEventListener("click", toggle);
function toggle()
{
console.log(this);
if(this.innerHTML === "+")
{
this.innerHTML = "-";
}
else
{
this.innerHTML = "+";
}
}
</script>
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