textarea 高度自適應

更多時間：2014-6-1 類別：Web前端瀏覽量：779

textarea 高度自適應

textarea 高度自適應

直接上代碼（需要引用 jquery 文件）

HTML 代碼復制


<!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。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>
<li>
    <textarea name="textarea" id="textarea" cols="60" rows="1" class="chackTextarea-area"></textarea>
</li>   
<script type="text/javascript">...
    $(".chackTextarea-area").autoTextarea(...{maxHeight:220});
</script>
</body>
</html>