用button隐藏和显示怎么实现不了请指教

源自：9-1 认识DOM

用button隐藏和显示怎么实现不了请指教

<!DOCTYPE HTML>

<html>

<head>

<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />

<title>style样式</title>

</head>

<body>

<h2 id="con">I love JavaScript</H2>

<p> JavaScript使网页显示动态效果并实现与用户交互功能。</p>

<script type="text/javascript">

var mychar=document.getElementById("con");

mychar.style.color="red";

mychar.style.backgroundColor="#CCC";

function yin(){

mychar.style.display="none";

}

function xianshi(){

mychar.style.display="block";

}

</script>

<form>

<input type="button" name="xianshi" value="xianshi" onclick="xianshi()"/>

<input type="button" name="yin" value="yin" onclick="yin()"/>

</form>

</body>

</html>

提问者：慕婉清917633 2018-08-17 21:34

个回答

慕神2178781

2018-08-18 10:03:16

已采纳

问题出在form表单，把form去掉就行

0
qq_夏佐_0

2018-11-29 12:47:55

看我代码哈：

<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>style样式</title>
</head>
<body>
<h2 id="con">I love JavaScript</h2>
<p> JavaScript使网页显示动态效果并实现与用户交互功能。</p>
<script type="text/javascript">

var conValue = document.getElementById("con");

function setColor() {
conValue.style.color = "red";
conValue.style.backgroundColor.color = "#CCC";
}

function styleHide() {
conValue.style.display = "none";
}

function showValue() {
conValue.style.display = "block";
}

</script>

<form>
<input type="button" value="改变颜色" onclick="setColor()" />
<input type="button" value="点击隐藏" onclick="styleHide()" />
<input type="button" value="点击显示" onclick="showValue()">
</form>

</body>
</html>

0
幸会why

2018-10-17 19:03:44

你这个Id"con"没有写在input 里面啊

0