字符串反序function IsReverse(text){ return text.split('').reverse().join('');}
金额大写转换函数function transform(tranvalue) { try { var i = 1; var dw2 = new Array('', '万', '亿'); //大单位 var dw1 = new Array('拾', '佰', '仟'); //小单位 var dw = new Array('零', '壹', '贰', '叁', '肆', '伍', '陆', '柒', '捌', '玖'); //整数部分用 //以下是小写转换成大写显示在合计大写的文本框中 //分离整数与小数 var source = splits(tranvalue); var num = source[0]; var dig = source[1]; //转换整数部分 var k1 = 0; //计小单位 var k2 = 0; //计大单位 var sum = 0; var str = ''; var len = source[0].length; //整数的长度 for (i = 1; i <= len; i++) { var n = source[0].charAt(len - i); //取得某个位数上的数字 var bn = 0; if (len - i - 1 >= 0) { bn = source[0].charAt(len - i - 1); //取得某个位数前一位上的数字 } sum = sum + Number(n); if (sum != 0) { str = dw[Number(n)].concat(str); //取得该数字对应的大写数字，并插入到str字符串的前面 if (n == '0') sum = 0; } if (len - i - 1 >= 0) { //在数字范围内 if (k1 != 3) { //加小单位 if (bn != 0) { str = dw1[k1].concat(str); } k1++; } else { //不加小单位，加大单位 k1 = 0; var temp = str.charAt(0); if (temp == '万' || temp == '亿') //若大单位前没有数字则舍去大单位 str = str.substr(1, str.length - 1); str = dw2[k2].concat(str); sum = 0; } } if (k1 == 3){ //小单位到千则大单位进一 k2++; } } //转换小数部分 var strdig = ''; if (dig != '') { var n = dig.charAt(0); if (n != 0) { strdig += dw[Number(n)] + '角'; //加数字 } var n = dig.charAt(1); if (n != 0) { strdig += dw[Number(n)] + '分'; //加数字 } } str += '元' + strdig; } catch(e) { return '0元'; } return str;}//拆分整数与小数function splits(tranvalue) { var value = new Array('', ''); temp = tranvalue.split('.'); for (var i = 0; i < temp.length; i++) { value = temp; } return value;}
resize的操作(function(){ var fn = function(){ var w = document.documentElement ? document.documentElement.clientWidth : document.body.clientWidth ,r = 1255 ,b = Element.extend(document.body) ,classname = b.className; if(w < r){ //当窗体的宽度小于1255的时候执行相应的操作 }else{ //当窗体的宽度大于1255的时候执行相应的操作 } } if(window.addEventListener){ window.addEventListener('resize', function(){ fn(); }); }else if(window.attachEvent){ window.attachEvent('onresize', function(){ fn(); }); } fn();})();
实现base64解码function base64_decode(data){ var b64 = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz+/='; var o1, o2, o3, h1, h2, h3, h4, bits, i = 0,ac = 0,dec = '',tmp_arr = []; if (!data) { return data; } data += ''; do { h1 = b64.indexOf(data.charAt(i++)); h2 = b64.indexOf(data.charAt(i++)); h3 = b64.indexOf(data.charAt(i++)); h4 = b64.indexOf(data.charAt(i++)); bits = h1 << 18 | h2 << 12 | h3 << 6 | h4; o1 = bits >> 16 & 0xff; o2 = bits >> 8 & 0xff; o3 = bits & 0xff; if (h3 == 64) { tmp_arr[ac++] = String.fromCharCode(o1); } else if (h4 == 64) { tmp_arr[ac++] = String.fromCharCode(o1, o2); } else { tmp_arr[ac++] = String.fromCharCode(o1, o2, o3); } } while (i < data.length); dec = tmp_arr.join(''); dec = utf8_decode(dec); return dec;}
获取窗体可见范围的宽与高function getViewSize(){ var de=document.documentElement; var db=document.body; var viewW=de.clientWidth==0 ? db.clientWidth : de.clientWidth; var viewH=de.clientHeight==0 ? db.clientHeight : de.clientHeight; return Array(viewW ,viewH);}
判断鼠标是否移出事件function isMouseOut(e, handler) { if (e.type !== 'mouseout') { return false; } var reltg = e.relatedTarget ? e.relatedTarget : e.type === 'mouseout' ? e.toElement : e.fromElement; while (reltg && reltg !== handler) { reltg = reltg.parentNode; } return (reltg !== handler);}
半角转换为全角函数function ToDBC(str){ var result = ''; for(var i=0; i < str.length; i++){ code = str.charCodeAt(i); if(code >= 33 && code <= 126){ result += String.fromCharCode(str.charCodeAt(i) + 65248); }else if (code == 32){ result += String.fromCharCode(str.charCodeAt(i) + 12288 - 32); }else{ result += str.charAt(i); } } return result;}
全角转换为半角函数function ToCDB(str){ var result = ''; for(var i=0; i < str.length; i++){ code = str.charCodeAt(i); if(code >= 65281 && code <= 65374){ result += String.fromCharCode(str.charCodeAt(i) - 65248); }else if (code == 12288){ result += String.fromCharCode(str.charCodeAt(i) - 12288 + 32); }else{ result += str.charAt(i); } } return result;}
阻止浏览器默认事件function stopDefault( ev ) { //阻止默认浏览器动作(W3C) if ( ev && ev.preventDefault ) ev.preventDefault(); //IE中阻止函数器默认动作的方式 else window.event.returnValue = false; return false; };
阻止冒泡function stopPropagation(e) { e = e || window.event; if(e.stopPropagation) { //W3C阻止冒泡方法 e.stopPropagation(); } else { e.cancelBubble = true; //IE阻止冒泡方法 } }
简单的表单验证，重点在于电话的验证function fnForm_set(){ var user_name = document.querySelector('#js_username').value.trim(); var user_tel = document.querySelector('#js_tel').value.trim(); if(user_name == null || user_name.length==0) { alert('请输入用户名') stopDefault(); } else if ((/^0?(13[0-9]|15[]|18[0236789]|14[57])[0-9]{8}$/g.test(user_tel))||(/^13\d{9}$/g.test(user_tel)) || (/^15[0-35-9]\d{8}$/g.test(user_tel)) || (/^18[05-9]\d{8}$/g.test(user_tel))) { //alert('验证完成'); return true; }else if(user_tel == null || user_tel.length==0){ alert('请输入电话号码'); stopDefault(); }else{ alert('请输入合法的电话号码'); stopDefault(); };};
获取json的长度function getJsonLength(jsonData){var jsonLength = 0;for(var item in jsonData){jsonLength++;}return jsonLength;}
设置cookie的办法function addCookie(name, value, expiresDays){ var cookieString = name + '=' + escape(value); //判断是否设置过期时间 if(expiresDays > 0) { var date = new Date(); date.setTime(date.getTime + expiresDays * 24 * 3600 * 1000); cookieString = cookieString + '; expires=' + date.toGMTString(); }; document.cookie = cookieString; }function getCookie(name){ var strCookie = document.cookie; var arrCookie = strCookie.split('; '); for(var i = 0;i < arrCookie.length;i++){ var arr = arrCookie[i].split('='); if(arr[0] == name) return arr[1]; } return ''; };