有幾個(gè)地方改動(dòng)都注釋了

<script?type="text/javascript">
????var?mycon?=?document.getElementById("con");
????var?mytxt?=?document.getElementById("txt");
????//定義"改變顏色"的函數(shù)
????function?yanse(){
????????mytxt.style.color="red";
????}

????//定義"改變寬高"的函數(shù)
????function?gaodu(){
????????//mytxt.style.width="200";????????//帶px
????????//mytxt.style.height="200";??????//帶px
????????mytxt.style.width="200px";????????
????????mytxt.style.height="200px";????????
????}

????//定義"隱藏內(nèi)容"的函數(shù)
????function?yincang(){
????????mytxt.style.display="none";
????}

????//定義"顯示內(nèi)容"的函數(shù)
????//function?yincang(){????????????//函數(shù)名寫(xiě)錯(cuò)了
????function?xianshi(){???????????????
????????mytxt.style.display="block";
????}

????//定義"取消設(shè)置"的函數(shù)
????function?quxiao(){
????????var?queding?=?confirm("是否恢復(fù)原始設(shè)置？")
????????//?if(queding==ture){????//true拼寫(xiě)錯(cuò)了
????????if(queding==true){???????????
????????????mytxt.removeAttribute('style');
????????}
????}
</script>