我试图操纵HTML,getElementsByClass()但由于某种原因它不起作用.当我用document.getElementByID()它时有效吗？为什么是这样？
<div class='boldStuff'> <p>Welcome to the site. </p> </div>
<script type="text/javascript">
document.getElementsByClass('boldStuff').innerHTML = 'Fred Flinstone';
</script>
我正在尝试使用.replaceWith将单词替换为函数但它不起作用我认为问题是我没有正确的函数正确但我不知道如何正确编写它.任何人都可以帮助我(这只是一个微不足道的.)谢谢.
<script type="text/javascript" src="http://code.jquery.com/jquery-1.7.min.js">
<html>
<body>
<script type="text/javascript">
var d=new Date();
var weekday=new Array(7);
weekday[0]="Monday";
weekday[1]="Tuesday";
weekday[2]="Wednesday";
weekday[3]="Thursday";
weekday[4]="Friday";
weekday[5]="Monday";
weekday[6]="Monday";
</script>
<script type="text/javascript">
$(document).ready(function($){
$('div.Shipby').replaceWith(function(){
return $("<div>").text("Orders placed now will ship " + weekday[d.getDay()]);
});
});
</script>
<div class="Shipby">
Tomorrow.
</div>
</body>
</html>