取消樣式的設(shè)置

mydiv.removeAttribute("style")

這是什么

<form>
??<!--當(dāng)點(diǎn)擊相應(yīng)按鈕，執(zhí)行相應(yīng)操作，為按鈕添加相應(yīng)事件-->
????<input?type="button"?value="改變顏色"?onClick="changeColor()">??
????<input?type="button"?value="改變寬高"?onClick="changeSize()">
????<input?type="button"?value="隱藏內(nèi)容"?onClick="hidetext()">
????<input?type="button"?value="顯示內(nèi)容"?onClick="showtext()">
????<input?type="button"?value="取消設(shè)置"?onClick="resettext()">
??</form>
??<script?type="text/javascript">
???var?myh?=?document.getElementById("con");
????var?mydiv?=?document.getElementById("txt");
//定義"改變顏色"的函數(shù)
function?changeColor(){
????mydiv.style.color="red";
????mydiv.style.backgroundColor="#ccc";
}
//定義"改變寬高"的函數(shù)
function?changeSize(){
????mydiv.style.width="200px";
????mydiv.style.height="300px";
}
//定義"隱藏內(nèi)容"的函數(shù)
function?hidetext(){
????mydiv.style.display="none";
}
//定義"顯示內(nèi)容"的函數(shù)
function?showtext(){
????mydiv.style.display="block";
}
//定義"取消設(shè)置"的函數(shù)
function?resettext(){
????var?mychose?=?confirm();
????if(mychose==true){
???????mydiv.removeAttribute("style");
????}
}