首頁猿問為什么我的按鍵都沒有用？求各位大神解答,

為什么我的按鍵都沒有用？求各位大神解答,

JavaScript

慕粉4094316 2016-10-16 08:48:55

<!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)頁添加動(dòng)態(tài)效果并實(shí)現(xiàn)與用戶交互的功能。</h5>??????? <p>1. JavaScript入門篇，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>? ??? <input type="button"? onClick="changecolor()" value="改變顏色" >? ??? <input type="button"? onClick="changesize()" value="改變寬高" >??? <input type="button"? onClick="texthide()" value="隱藏內(nèi)容" >??? <input type="button" onClick="showtext()" value="顯示內(nèi)容" >??? <input type="button"? onClick="resttext()" value="取消設(shè)置" >? </form>? <script type="text/javascript">?? var myzl=document.getElementById("con");??? var myxl=document.getElementById("txt");??? function changecolor(){??????? myzl.style.color="red";??????? myzl.style.backgroundColor="blcak";??????? myxl.style.color="bule";??????? myxl.style.backgroundColor="white";??? }//定義"改變顏色"的函數(shù)?? ??? function changesize(){??????? myzl.style.width="300px";??????? myzl.style.height="200px";??????? myxl.style.fontStyle="黑體"；??? }//定義"改變寬高"的函數(shù)??? function texthide(){??????? myzl.style.display="none";??????? myxl.style.display="block";??? }//定義"隱藏內(nèi)容"的函數(shù)??? function showtext(){??????? myzl.style.display="block";??????? myxl.style.display="none";??? }//定義"顯示內(nèi)容"的函數(shù)??? function resttext(){??????? var mychoose=window.confirm("確定要取消設(shè)置么？")；??????? if(mychoose=ture)??????? {????????? myzl.removeAttribute("style");????????? myxl.removeAttribute("style");??????? }??????? else{??????????? return();??????? }??? }??? </script></body></html>

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