[英]Javascript/html5 selector
I'm trying to do the HTML5 fundamentals tutorial and this is so far my code : 我正在尝试做HTML5基础知识教程,到目前为止,这是我的代码:
<!DOCTYPE html>
<head>
<script src="script.js"></script>
<title>HTML Fundamentals</title>
</head>
<body>
<div id="result" class="well"
<div id="log"> </div>
<hr />
<div class="item" id="div1">div 1</div>
<div class="item" id="div2">div 2</div>
<div class="item" id="div3">div 3</div>
<div class="item" id="div4">div 4</div>
<div class="item" id="div5">div 5</div>
<div class="item" id="div6">div 6</div>
<hr />
</div>
function initiate() {
var divs = document.querySelectorAll('div');
var log = document.querySelector('#log');
log.innerText = 'There are' + divs.length + 'DIVs on this page';
}
addEventListener("load", initiate);
But it does not show the message as i would like. 但是它并没有显示我想要的消息。 Care to point out what i'm missing? 要指出我想念的东西吗?
Your HTML is invalid: You're missing a >
on <div id="result" class="well"
. 您的HTML无效:您在<div id="result" class="well"
上缺少>
。
Once you fix these you get an accurate result: JSFiddle demo . 解决这些问题后,您将获得准确的结果: JSFiddle演示 。 (6 .item
div
elements, 1 #log
div
element and 1 .well
div
element = 8 total). (6个.item
div
元素,1个#log
div
元件和1个.well
div
元素= 8个)。
You are missing an end of tag character 您缺少标签字符的结尾
<div id="result" class="well"
should be: 应该:
<div id="result" class="well">
otherwise it seems to work fine. 否则它似乎工作正常。 Here is a fiddle: 这是一个小提琴:
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