jquery文字填写自动高度的实现方法
下面开始写一个jquery插件
(function($){ $.fn.autoTextarea = function(options) { var defaults={ maxHeight:null,//文本框是否自动撑高,默认:null,不自动撑高;如果自动撑高必须输入数值,该值作为文本框自动撑高的最大高度 minHeight:$(this).height() }; var opts = $.extend({},defaults,options); return $(this).each(function() { $(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);
调用代码示例:
<textarea name="textarea" id="textarea" cols="60" rows="4" class="chackTextarea-area"></textarea> <script type="text/javascript"> $(".chackTextarea-area").autoTextarea({ maxHeight: 220,//文本框是否自动撑高,默认:null,不自动撑高;如果自动撑高必须输入数值,该值作为文本框自动撑高的最大高度 });
相关推荐
EdwardSiCong 2020-11-23
85477104 2020-11-17
hhanbj 2020-11-17
81427005 2020-11-11
seoppt 2020-09-13
honeyth 2020-09-13
WRITEFORSHARE 2020-09-13
84483065 2020-09-11
momode 2020-09-11
85477104 2020-08-15
83510998 2020-08-08
82550495 2020-08-03
tthappyer 2020-08-03
84901334 2020-07-28
tthappyer 2020-07-25
TONIYH 2020-07-22
tztzyzyz 2020-07-20
83510998 2020-07-18
81463166 2020-07-17