我只想显示例如帖子中的 200 个字,带有显示/隐藏按钮以显示整个帖子并将帖子隐藏到 200 个字。 文本在变量上 我不知道该怎么做。 我尝试使用 javascript,但我无法隐藏帖子的内容。
这是:
<div id="test">content</div>
<script>
var str = "<?=$row[3]?>";
var test = str.substr(0, 700);
document.getElementById('test').innerHTML = test;
</script>
<p id="demo"></p>
<script>
function myFunction() {
var str = "<?=$row[3]?>";
var test = str.substr(700);
document.getElementById("demo").innerHTML = test;
}
</script>
<button onclick="myFunction()">Click me</button>
最佳答案
你可以在简单的 css 中做到这一点
Don't need any other
overflow hidden 文本
modify code in css according to your need
/* css only show/hide
*/
html { background: white }
* {
margin: 0;
padding: 0;
-webkit-box-sizing: border-box;
-moz-box-sizing: border-box;
-ms-box-sizing: border-box;
box-sizing: border-box;
}
figure {
margin: 0 0 1.3rem 0;
-webkit-transition: .125s linear;
-moz-transition: .125s linear;
-ms-transition: .125s linear;
-o-transition: .125s linear;
transition: .125s linear;
}
figure img {
max-width: 100%;
height: auto;
}
body {
max-width: 480px;
width: 90%;
margin: 3em auto;
font-size: 75%;
line-height: 1.3rem;
font-family: sans-serif;
position: relative;
*zoom: 1;
}
body:before, body:after {
content: "";
display: table;
}
body:after { clear: both }
p { margin-bottom: 1.3rem }
article {
margin-bottom: 3rem;
position: relative;
*zoom: 1;
}
article:before, article:after {
content: "";
display: table;
}
article:after { clear: both }
article figure {
float: left;
width: 32.5%;
}
article section:first-of-type {
float: right;
width: 62.5%;
}
article section:last-of-type {
display: none;
visibility: hidden;
}
section {
-webkit-transition: .125s linear;
-moz-transition: .125s linear;
-ms-transition: .125s linear;
-o-transition: .125s linear;
transition: .125s linear;
}
input[type=checkbox] {
border: 0;
clip: rect(0 0 0 0);
height: 1px;
width: 1px;
margin: -1px;
overflow: hidden;
padding: 0;
position: absolute;
}
[for="read_more"] {
position: absolute;
bottom: -3rem;
left: 0;
width: 100%;
text-align: center;
padding: .65rem;
box-shadow: inset 1px 1px rgba(0, 0, 0, 0.1), inset -1px -1px rgba(0, 0, 0, 0.1);
}
[for="read_more"]:hover {
background: rgba(0,0,0,.5);
color: rgb(255,255,255);
}
[for="read_more"] span:last-of-type {
display: none;
visibility: hidden;
}
input[type=checkbox]:checked ~ section {
display: block;
visibility: visible;
width: 100%;
}
input[type=checkbox]:checked ~ figure { width: 100% }
input[type=checkbox]:checked ~ [for="read_more"] span:first-of-type {
display: none;
visibility: hidden;
}
input[type=checkbox]:checked ~ [for="read_more"] span:last-of-type {
display: block;
visibility: visible;
}
<article>
<input type="checkbox" id="read_more" role="button">
<label for="read_more" onclick=""><span>Read More</span><span>Hide This Shit!</span></label>
<figure>
<img src="http://www.surprisegiftz.com/images/media/ceramicphototiles.jpg" alt="Example text" />
</figure>
<section>
<p>The function of a paragraph is to mark a pause, setting the paragraph apart from what precedes it. If a paragraph is preceded by a title or subhead, the indent is superfluous and can therefore be omitted</p>
</section>
<section>
<p>The function of a paragraph is to mark a pause, setting the paragraph apart from what precedes it. If a paragraph is preceded by a title or subhead, the indent is superfluous and can therefore be omitted</p>
<p>The function of a paragraph is to mark a pause, setting the paragraph apart from what precedes it. If a paragraph is preceded by a title or subhead, the indent is superfluous and can therefore be omitted</p>
</section>
</article>
关于javascript - 阅读更多按钮或显示/隐藏 php,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/30774846/