jquery----TextArea高度自适应
jopen
12年前
//最小高度和最大高度默认 $("#textarea1").textareaAutoHeight(); //最大高度为100px $("#textarea2").textareaAutoHeight({ maxHeight:100 }); //最小高度为50px,最大高度为200px $("#textarea3").textareaAutoHeight({ minHeight:50, maxHeight:200 }); $.fn.extend({ textareaAutoHeight: function (options) { this._options = { minHeight: 0, maxHeight: 1000 } this.init = function () { for (var p in options) { this._options[p] = options[p]; } if (this._options.minHeight == 0) { this._options.minHeight=parseFloat($(this).height()); } for (var p in this._options) { if ($(this).attr(p) == null) { $(this).attr(p, this._options[p]); } } $(this).keyup(this.resetHeight).change(this.resetHeight) .focus(this.resetHeight); } this.resetHeight = function () { var _minHeight = parseFloat($(this).attr("minHeight")); var _maxHeight = parseFloat($(this).attr("maxHeight")); if (!$.browser.msie) { $(this).height(0); } var h = parseFloat(this.scrollHeight); h = h < _minHeight ? _minHeight : h > _maxHeight ? _maxHeight : h; $(this).height(h).scrollTop(h); if (h >= _maxHeight) { $(this).css("overflow-y", "scroll"); } else { $(this).css("overflow-y", "hidden"); } } this.init(); } });