angular 版本----------
pc 移动端都经过测试,没问题 放心用吧!
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js版本
1.引入Jquery.
<script id="jquery_183" type="text/javascript" class="library" src="/js/sandbox/jquery/jquery-1.8.3.min.js"></script>
2.引入初始css.
body { background:#fff; }
textarea {width:300px; min-height:60px; overflow:hidden;}
3.加入自适应的JS
$.fn.autoHeight = function(){
function autoHeight(elem){
elem.style.height = ‘auto‘;
elem.scrollTop = 0; //防抖动
elem.style.height = elem.scrollHeight + ‘px‘;
}
this.each(function(){
autoHeight(this);
$(this).on(‘keyup‘, function(){
autoHeight(this);
});
});
}
$(‘textarea[autoHeight]‘).autoHeight();
4.加入textarea
<div><textarea autoHeight="true">textarea</textarea></div>
1.引入Jquery.
<script id="jquery_183" type="text/javascript" class="library" src="/js/sandbox/jquery/jquery-1.8.3.min.js"></script>
2.引入初始css.
body { background:#fff; }
textarea {width:300px; min-height:60px; overflow:hidden;}
3.加入自适应的JS
$.fn.autoHeight = function(){
function autoHeight(elem){
elem.style.height = ‘auto‘;
elem.scrollTop = 0; //防抖动
elem.style.height = elem.scrollHeight + ‘px‘;
}
this.each(function(){
autoHeight(this);
$(this).on(‘keyup‘, function(){
autoHeight(this);
});
});
}
$(‘textarea[autoHeight]‘).autoHeight();
4.加入textarea
<div><textarea autoHeight="true">textarea</textarea></div>
$(function(){
$.fn.autoHeight = function(){
function autoHeight(elem){
elem.style.height = ‘auto‘;
elem.scrollTop = 0; //防抖动
elem.style.height = elem.scrollHeight + ‘px‘;
}
this.each(function(){
autoHeight(this);
$(this).on(‘keyup‘, function(){
autoHeight(this);
});
});
}
$(‘textarea[autoHeight]‘).autoHeight();
})
页面中的textarea直接加属性就行
<textarea autoHeight="true" readonly="readonly" > </textarea>
原文地址:https://www.cnblogs.com/Blogs-Wang/p/11462658.html