求大神看看 怎么簡(jiǎn)化代碼 感覺(jué)每個(gè)函數(shù)里有confirm 很奇怪
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" Content="text/html; charset=utf-8" />
<title>javascript</title>
<style type="text/css">
body{font-size:12px;}
#txt{
? ? height:400px;
? ? width:600px;
border:#333 solid 1px;
padding:5px;
? ??
}
p{
line-height:18px;
text-indent:2em;
? ??
}
</style>
</head>
<body>
? <h2 id="con">JavaScript課程</H2>
? <div id="txt">?
? ? ?<h5>JavaScript為網(wǎng)頁(yè)添加動(dòng)態(tài)效果并實(shí)現(xiàn)與用戶(hù)交互的功能。</h5>
? ? ? ? <p>1. JavaScript入門(mén)篇，讓不懂JS的你，快速了解JS。</p>
? ? ? ? <p>2. JavaScript進(jìn)階篇，讓你掌握J(rèn)S的基礎(chǔ)語(yǔ)法、函數(shù)、數(shù)組、事件、內(nèi)置對(duì)象、BOM瀏覽器、DOM操作。</p>
? ? ? ? <p>3. 學(xué)完以上兩門(mén)基礎(chǔ)課后，在深入學(xué)習(xí)JavaScript的變量作用域、事件、對(duì)象、運(yùn)動(dòng)、cookie、正則表達(dá)式、ajax等課程。</p>
? </div>
? <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="newColor ()">??
? ? <input type="button" value="改變寬高" onclick="newWandH ()">
? ? <input type="button" value="隱藏內(nèi)容" onclick="newDisplay ()">
? ? <input type="button" value="顯示內(nèi)容" onclick="newBlock ()">
? ? <input type="button" value="取消設(shè)置" onclick="newSetting ()">
? </form>
? <script type="text/javascript">
//定義"改變顏色"的函數(shù)
function newColor (){
var changeColor = confirm("是否修改顏色");
if (changeColor == true){
var h2Color = document.getElementById("con");
h2Color.style.color = "skyblue";
}
}
//定義"改變寬高"的函數(shù)
function newWandH (){
var changeWandH = confirm("是否修改正文寬高");
if (changeWandH == true){
var txtWandH = document.getElementById("txt");
txtWandH.style.width = "800px";
txtWandH.style.height = "800px";
}
}
//定義"隱藏內(nèi)容"的函數(shù)
function newDisplay (){
var changeDisplay = confirm("是否隱藏內(nèi)容");
if (changeDisplay == true){
var pDisplay = document.getElementById("txt");
? ? pDisplay.style.display="none";
}
}
//定義"顯示內(nèi)容"的函數(shù)
function newBlock (){
var changeBlock = confirm("是否顯示內(nèi)容");
if (changeBlock == true){
var txtBlock = document.getElementById("txt");
txtBlock.style.display = "block";
}
}
//定義"取消設(shè)置"的函數(shù)
function newSetting (){
var changeSetting = confirm("是否修改顏色");
if (changeSetting == true){
var qSetting = document.getElementById("con");
qSetting.style.color = "black";
var rSetting = document.getElementById("txt");
rSetting.style.width = "600px"
rSetting.style.height = "400px"
rSetting.style.display = "block"
}
}
? </script>
</body>
</html>
2018-12-11
let con=document.getElementById("con");
let txt=document.getElementById("txt");
?
function confirmfun(txt,callback){
??? if(confirm(txt)){
??????? callback();
??? }
}
//定義"改變顏色"的函數(shù)
function changeColor(color="#fff"){
??? confirmfun("是否改變顏色",function(){
??????? txt.style.color=color;
??????? txt.style.backgroundColor="#000";
??? });
}
//定義"改變寬高"的函數(shù)
function changeWidth(width="300px",height="200px"){
??? confirmfun("是否改變寬高",function(){
??????? txt.style.width=width;
??????? txt.style.height=height;
??? });
}
//定義"隱藏內(nèi)容"的函數(shù)
function changeHide(){
??? confirmfun("是否隱藏內(nèi)容",function(){
??????? txt.style.display="none";
??? });
}
//定義"顯示內(nèi)容"的函數(shù)
function changeShow(){
??? confirmfun("是否顯示內(nèi)容",function(){
??????? txt.style.display="block";
??? });
}
//定義"取消設(shè)置"的函數(shù)
function clearStyle(){
??? if(confirm("是否取消所有設(shè)置")){
??????? txt.removeAttribute("style");
??? }
}
2018-12-11
審題錯(cuò)了