前端开发必备常用工具函数小结

$.fn.serializeJson = function() {
var serializeObj = {};
var array = this.serializeArray();
var str = this.serialize();
$(array).each(function() {
if (serializeObj[this.name]) {
if ($.isArray(serializeObj[this.name])) {
serializeObj[this.name].push(this.value);
} else {
serializeObj[this.name] = [serializeObj[this.name], this.value];
}
} else {
serializeObj[this.name] = this.value;
}
});
return serializeObj;
};

Strg.prototype.strcut = function(number) {
var length = this.length;
var tmp = this.substr(0, number);
if (this.length > number) {
tmp += "…";
}
return tmp;
}

Date.prototype.Format = function(fmt, current) {
if (current) {
var diff = current - this.getTime();
if (diff < 5 60 1000) {
return "刚刚";
}
if (diff < 60 60 1000) {
return (Math.floor(diff / (60 1000))) + "分钟前";
}
if (diff < 24 60 60 1000) {
return (Math.floor(diff / (60 60 1000))) + "小时前";
}
if (diff < 30 24 60 60 1000) {
return (Math.floor(diff / (24 60 60 1000))) + "天前";
}
if (diff < 12 30 24 60 60 1000) {
return (Math.floor(diff / (30 24 60 60 1000))) + "月前";
}
if (diff > 12 30 24 60 60 1000) {
return (Math.floor(diff / (12 30 24 60 60 1000))) + "年前";
}
}
var o = {
"Y+": this.getFullYear(), //月份
"M+": this.getMonth() + 1, //月份
"d+": this.getDate(), //日
"h+": this.getHours(), //小时
"m+": this.getMutes(), //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 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;
};

function parseUrl() {
var arr = location.search.split('?')[1].split('&');
var params = {};
for (var i = 0, l = arr.length; i < l; i++) {
var param = arr[i].split('=');
params[param[0]] = param[1];
}
return params;
}

function getParameterByName(name) {
name = name.replace(/[\[]/, "\\[").replace(/[\]]/, "\\]");
var regex = new RegExp("[\\?&]" + name + "=([^&#])"),
results = regex.exec(location.search);
return results === null ? "" : decodeURIComponent(results[1].replace(/\+/g, " "));
}

function throttle(fn, delay) {
var timer = null;
return function() {
var context = this,
args = arguments;
clearTimeout(timer);
timer = setTimeout(function() {
fn.apply(context, args);
}, delay);
};
}

/
防止多次点击函数

fn 完成时调用回调
function fn(event,end) {
(typeof end === "function") && end(); // 操作完成
}
/function noRepeateTap(fn) {
var $obj;
return function(event) {
$obj = $(this);
if ($obj.data("loaddg") === "true") {
return;
}
$obj.data("loaddg", "true").addClass('loaddg');
fn.call(this, event, function end() {
$obj.data("loaddg", "").removeClass('loaddg');
return;
});
}
}

// 绑定事件
$(contaer).on('click', '.btn-cancel', noRepeateTap(cancel));
// 事件响应函数
function cancel(event, end) {
event.preventDefault();
// 模拟异步请求
setTimeout(function(){
end(); // 需要手动调用注入的完成函数，通知完成,函数自动添加loaddg class 类，用于调整样式，完成后自动移除
},5000)
}