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@ -179,94 +179,73 @@ function regexStudentWorkDescription()
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}
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}
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//textarea自适应高度
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(function($){
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$.fn.autoResize = function(options) {
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// Just some abstracted details,
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// to make plugin users happy:
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var settings = $.extend({
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onResize : function(){},
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animate : true,
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animateDuration : 150,
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animateCallback : function(){},
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extraSpace : 20,
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limit: 1000
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}, options);
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// Only textarea's auto-resize:
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this.filter('textarea').each(function(){
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// Get rid of scrollbars and disable WebKit resizing:
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var textarea = $(this).css({resize:'none','overflow-y':'hidden'}),
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// Cache original height, for use later:
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origHeight = textarea.height(),
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// Need clone of textarea, hidden off screen:
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clone = (function(){
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// Properties which may effect space taken up by chracters:
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var props = ['height','width','lineHeight','textDecoration','letterSpacing'],
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propOb = {};
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// Create object of styles to apply:
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$.each(props, function(i, prop){
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propOb[prop] = textarea.css(prop);
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});
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// Clone the actual textarea removing unique properties
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// and insert before original textarea:
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return textarea.clone().removeAttr('id').removeAttr('name').css({
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position: 'absolute',
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top: 0,
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left: -9999
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}).css(propOb).attr('tabIndex','-1').insertBefore(textarea);
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})(),
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lastScrollTop = null,
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updateSize = function() {
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// Prepare the clone:
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clone.height(0).val($(this).val()).scrollTop(10000);
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// Find the height of text:
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var scrollTop = Math.max(clone.scrollTop(), origHeight) + settings.extraSpace,
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toChange = $(this).add(clone);
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// Don't do anything if scrollTip hasen't changed:
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if (lastScrollTop === scrollTop) { return; }
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lastScrollTop = scrollTop;
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// Check for limit:
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if ( scrollTop >= settings.limit ) {
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$(this).css('overflow-y','hidden');
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return;
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}
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// Fire off callback:
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settings.onResize.call(this);
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// Either animate or directly apply height:
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settings.animate && textarea.css('display') === 'block' ?
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toChange.stop().animate({height:scrollTop}, settings.animateDuration, settings.animateCallback)
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: toChange.height(scrollTop);
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};
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// Bind namespaced handlers to appropriate events:
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textarea
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.unbind('.dynSiz')
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.bind('keyup.dynSiz', updateSize)
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.bind('keydown.dynSiz', updateSize)
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.bind('change.dynSiz', updateSize);
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});
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// Chain:
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return this;
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//textarea自适应高度 纯js写的 有浏览器判断
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/**
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* 文本框根据输入内容自适应高度
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* @param {HTMLElement} 输入框元素
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* @param {Number} 设置光标与输入框保持的距离(默认0)
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* @param {Number} 设置最大高度(可选)
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*/
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var autoTextarea = function (elem, extra, maxHeight) {
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extra = extra || 0;
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var isFirefox = !!document.getBoxObjectFor || 'mozInnerScreenX' in window,
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isOpera = !!window.opera && !!window.opera.toString().indexOf('Opera'),
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addEvent = function (type, callback) {
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elem.addEventListener ?
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elem.addEventListener(type, callback, false) :
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elem.attachEvent('on' + type, callback);
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},
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getStyle = elem.currentStyle ? function (name) {
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var val = elem.currentStyle[name];
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if (name === 'height' && val.search(/px/i) !== 1) {
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var rect = elem.getBoundingClientRect();
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return rect.bottom - rect.top -
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parseFloat(getStyle('paddingTop')) -
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parseFloat(getStyle('paddingBottom')) + 'px';
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};
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return val;
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} : function (name) {
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return getComputedStyle(elem, null)[name];
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},
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minHeight = parseFloat(getStyle('height'));
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elem.style.resize = 'none';
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var change = function () {
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var scrollTop, height,
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padding = 0,
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style = elem.style;
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if (elem._length === elem.value.length) return;
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elem._length = elem.value.length;
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if (!isFirefox && !isOpera) {
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padding = parseInt(getStyle('paddingTop')) + parseInt(getStyle('paddingBottom'));
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};
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scrollTop = document.body.scrollTop || document.documentElement.scrollTop;
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elem.style.height = minHeight + 'px';
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if (elem.scrollHeight > minHeight) {
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if (maxHeight && elem.scrollHeight > maxHeight) {
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height = maxHeight - padding;
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style.overflowY = 'auto';
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} else {
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height = elem.scrollHeight - padding;
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style.overflowY = 'hidden';
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};
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style.height = height + extra + 'px';
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scrollTop += parseInt(style.height) - elem.currHeight;
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document.body.scrollTop = scrollTop;
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document.documentElement.scrollTop = scrollTop;
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elem.currHeight = parseInt(style.height);
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};
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};
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})(jQuery);
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addEvent('propertychange', change);
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addEvent('input', change);
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addEvent('focus', change);
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change();
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};
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