工作要用到textarea自适应高度的场景，于是就网上找了个，闲话少说，上代码：
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title></title>
<style type="text/css">
.chackTextarea-area{line-height: 20px; font-size: 14px;padding: 0;border: 1px solid #CDCDCD; width: 400px;}
</style>
<script type="text/javascript" src="jquery-1.7.1.js"></script>
<script type="text/javascript">
(function($){
$.fn.autoTextarea = function(options) {
var defaults={
maxHeight:null,
minHeight:$(this).height()
};
var opts = $.extend({},defaults,options);
$(this).bind("paste cut keydown keyup focus blur",function(){
var height,style=this.style;
this.style.height = opts.minHeight + 'px';
if (this.scrollHeight > opts.minHeight) {
if (opts.maxHeight && this.scrollHeight > opts.maxHeight) {
height = opts.maxHeight;
style.overflowY = 'scroll';
} else {
height = this.scrollHeight;
style.overflowY = 'hidden';
}
style.height = height + 'px';
}
});
};
})(jQuery);
</script>
</head>
<body>
<div>
<textarea name="textarea" id="textarea" cols="60" rows="1" class="chackTextarea-area"></textarea>
</div>
<script type="text/javascript">
$(".chackTextarea-area").autoTextarea({maxHeight:220});
</script>
</body>
</html>
原创文章，作者：kepupublish，如若转载，请注明出处：https://blog.ytso.com/98524.html