我正在使用CSS样式的弹出窗口来在第一页加载时捕获电子邮件地址。我正在使用cookie集，以确保仅加载页面。我的问题是，如何在纯Javascript中调用该类
<div id="openModal" class="modalDialog">
<div>
<a href="#close" title="Close" class="close">X</a>
<h2>Keep up to date</h2>
<p>Enter your email address and keep up to date.</p>
<p><form>
<input type="text" name="email"><br>
<input type="submit" value="Go">
</form>
</p>
</div>
</div>
<style>
.modalDialog {
position: fixed;
font-family: Arial, Helvetica, sans-serif;
top: 0;
right: 0;
bottom: 0;
left: 0;
background: rgba(0,0,0,0.8);
z-index: 99999;
opacity:0;
-webkit-transition: opacity 400ms ease-in;
-moz-transition: opacity 400ms ease-in;
transition: opacity 400ms ease-in;
pointer-events: none;
}
.modalDialog:target {
opacity:1;
pointer-events: auto;
}
.modalDialog > div {
width: 400px;
position: relative;
margin: 10% auto;
padding: 5px 20px 13px 20px;
border-radius: 10px;
background: #fff;
background: -moz-linear-gradient(#fff, #999);
background: -webkit-linear-gradient(#fff, #999);
background: -o-linear-gradient(#fff, #999);
}
.close {
background: #606061;
color: #FFFFFF;
line-height: 25px;
position: absolute;
right: -12px;
text-align: center;
top: -10px;
width: 24px;
text-decoration: none;
font-weight: bold;
-webkit-border-radius: 12px;
-moz-border-radius: 12px;
border-radius: 12px;
-moz-box-shadow: 1px 1px 3px #000;
-webkit-box-shadow: 1px 1px 3px #000;
box-shadow: 1px 1px 3px #000;
}
.close:hover { background: #00d9ff; }
</style>
我的Javascript
function getCookie(name) {
var value = "; " + document.cookie;
var parts = value.split("; " + name + "=");
if (parts.length == 2) return parts.pop().split(";").shift();
}
function loadEmail()
{
// document.cookie = "loaded=none";
var loaded = getCookie("loaded");
if (loaded !== "true") {
openModal; <<< Call ID >>>
}
document.cookie = "loaded=true";
}
<body onLoad="loadEmail()">
我该如何<div id="openModal" class="modalDialog">从Javascript而不是<a href="#openModal">Open Modal</a>
不能100％确定您要执行的操作，但是如果您要定位纯js中的元素，请尝试：
var elm = document.getElementById('openModal');
elm.style.display = 'block';
elm.style.pointerEvents = "auto";
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