1. javascript
- 格式化时间戳，返回几（刚刚、分钟、小时、天）前字样
function timeago(dateTimeStamp){
var minute = 1000 * 60;
var hour = minute * 60;
var day = hour * 24;
var week = day * 7;
var halfamonth = day * 15;
var month = day * 30;
var now = new Date().getTime();
var diffValue = now - dateTimeStamp;
if(diffValue < 0){ return ""; } var minC = diffValue/minute; var hourC = diffValue/hour; var dayC = diffValue/day; var weekC = diffValue/week; var monthC = diffValue/month; if(monthC >= 1 && monthC <= 3){ result = " " + parseInt(monthC) + "月前"; }else if(weekC >= 1 && weekC <= 3){ result = " " + parseInt(weekC) + "周前"; }else if(dayC >= 1 && dayC <= 6){ result = " " + parseInt(dayC) + "天前"; }else if(hourC >= 1 && hourC <= 23){ result = " " + parseInt(hourC) + "小时前"; }else if(minC >= 1 && minC <= 59){ result =" " + parseInt(minC) + "分钟前"; }else if(diffValue >= 0 && diffValue <= minute){
result = "刚刚";
}else {
var datetime = new Date();
datetime.setTime(dateTimeStamp);
var Nyear = datetime.getFullYear();
var Nmonth = datetime.getMonth() + 1 < 10 ? "0" + (datetime.getMonth() + 1) : datetime.getMonth() + 1;
var Ndate = datetime.getDate() < 10 ? "0" + datetime.getDate() : datetime.getDate();
var Nhour = datetime.getHours() < 10 ? "0" + datetime.getHours() : datetime.getHours();
var Nminute = datetime.getMinutes() < 10 ? "0" + datetime.getMinutes() : datetime.getMinutes();
var Nsecond = datetime.getSeconds() < 10 ? "0" + datetime.getSeconds() : datetime.getSeconds();
result = Nyear + "-" + Nmonth + "-" + Ndate;
}
return result;
}
function getFileSize(fileByte) {
var fileSizeByte = fileByte;
var fileSizeMsg = "";
if (fileSizeByte < 1048576) fileSizeMsg = (fileSizeByte / 1024).toFixed(2) + " KB"; else if (fileSizeByte == 1048576) fileSizeMsg = "1MB"; else if (fileSizeByte > 1048576 && fileSizeByte < 1073741824) fileSizeMsg = (fileSizeByte / (1024 * 1024)).toFixed(2) + " MB"; else if (fileSizeByte > 1048576 && fileSizeByte == 1073741824) fileSizeMsg = "1GB";
else if (fileSizeByte > 1073741824 && fileSizeByte < 1099511627776) fileSizeMsg = (fileSizeByte / (1024 * 1024 * 1024)).toFixed(2) + " GB";
else fileSizeMsg = "文件超过1TB";
return fileSizeMsg;
}
/**
* 字符串转日期
* 格式：yyyy-MM-dd HH:mm:ss
* yyyy-MM-dd
* @param strDate
* @returns {Date}
*/
function strToDate(strDate){
if(!strDate) return;
var o = new Date(strDate.replace(/-/g,"/"));
return o;
}
/**
* checkbox单选
* @param checkboxName
* @param form
*/
function singleCheckbox(checkboxName, form) {
if (checkboxName == null) return;
var f = form || document.forms[0];
checkboxs = document.getElementsByName(checkboxName);
for(i = 0; i < checkboxs.length; i++){
checkboxs[i].onclick = function(){
for (j = 0; j < checkboxs.length; j++ ){
if (this.value != checkboxs[j].value && checkboxs[j].checked == true){
checkboxs[j].checked = false;
}
}
}
}
}
/**
* 校验变量值是否为null或空字符（undefined、null、"" 返回false,其他返回true）
*/
function isNotBlank(value){
if(value == undefined){
return false;
}
if(value == "undefined"){
return false;
}
if(value == null){
return false;
}
if(value == "null"){
return false;
}
if(value === ""){
return false;
}
return true;
}
2. JQuery
$.fn.serializeObject = function() {
var o = {};
var a = this.serializeArray();
$.each(a, function() {
if (o[this.name]) {
if (!o[this.name].push) {
o[this.name] = [ o[this.name] ];
}
o[this.name].push(this.value || '');
} else {
o[this.name] = this.value || '';
}
});
return o;
};
$.extend({
/**
* 装载表单数据 jsonStr json数据格式
*/
loadFormData : function(jsonStr) {
var obj = eval("(" + jsonStr + ")");
var key, value, tagName, type, arr;
for (x in obj) {
key = x;
value = obj[x];
$("[name='" + key + "'],[name='" + key + "[]']").each(function() {
tagName = $(this)[0].tagName;
type = $(this).attr('type');
if (tagName == 'INPUT') {
if (type == 'radio') {
$(this).attr('checked', $(this).val() == value);
} else if (type == 'checkbox') {
arr = value.split(',');
for (var i = 0; i < arr.length; i++) {
if ($(this).val() == arr[i]) {
$(this).attr('checked', true);
break;
}
}
} else {
$(this).val(value);
}
} else if (tagName == 'SELECT' || tagName == 'TEXTAREA') {
$(this).val(value);
}
});
}
}
});
/**
* 格式化日期
* 调用方式： var str = new Date().Format("yyyy-MM-dd HH:mm:ss");
*/
Date.prototype.Format = function (fmt) { //author: meizz
var o = {
"M+": this.getMonth() + 1, //月份
"d+": this.getDate(), //日
"H+": this.getHours(), //小时
"m+": this.getMinutes(), //分
"s+": this.getSeconds(), //秒
"q+": Math.floor((this.getMonth() + 3) / 3), //季度
"S": this.getMilliseconds() //毫秒
};
if (/(y+)/.test(fmt)) fmt = fmt.replace(RegExp.$1, (this.getFullYear() + "").substr(4 - RegExp.$1.length));
for (var k in o)
if (new RegExp("(" + k + ")").test(fmt))
fmt = fmt.replace(RegExp.$1, (RegExp.$1.length == 1) ? (o[k]) : (("00" + o[k]).substr(("" + o[k]).length)));
return fmt;
} ;
/**
* 删除数组元素
*/
Array.prototype.remove=function(dx){
if(isNaN(dx)||dx>this.length){return false;}
for(var i=0,n=0;i<this.length;i++)
{
if(this[i]!=this[dx])
{
this[n++]=this[i]
}
}
this.length-=1
}
//检查是不是数组
function isArray(arg){
return Object.prototype.toString.call(arg) === '[object Array]';
}