常用js方法

时间:2023-03-09 00:03:56
常用js方法
    function dateGetter(name, size, offset, trim) {
offset = offset || 0;
return function (date) {
var value = date['get' + name]();
if (offset > 0 || value > -offset)
value += offset;
if (value === 0 && offset == -12) value = 12;
return padNumber(value, size, trim);
};
};
function padNumber(num, digits, trim) {
var neg = '';
if (num < 0) {
neg = '-';
num = -num;
}
num = '' + num;
while (num.length < digits) num = '0' + num;
if (trim)
num = num.substr(num.length - digits);
return neg + num;
};
function dateStrGetter(name, shortForm) {
return function(date, formats) {
var value = date['get' + name]();
var get = (shortForm ? ('SHORT' + name) : name).toUpperCase(); return formats[get][value];
};
};
window.IGrow = {};
var Utilities = {
getParameterByName: function (name) {
name = name.replace(/[\[]/, "\\[").replace(/[\]]/, "\\]");
var regex = new RegExp("[\\?&]" + name + "=([^&#]*)"),
results = regex.exec(location.search);
return results === null ? "" : decodeURIComponent(results[1].replace(/\+/g, " "));
},
findElement: function (arr, propName, propValue) {
for (var i = 0; i < arr.length; i++)
if (arr[i][propName] == propValue)
return arr[i];
},
findWithAttr: function (array, attr, value) {
for (var i = 0; i < array.length; i += 1) {
if (array[i][attr] === value) {
return i;
}
}
},
jsonObjToBase64: function (json) {
return btoa(encodeURIComponent(JSON.stringify(json)));
},
base64TojsonObj: function (base64) {
return JSON.parse(decodeURIComponent(atob(base64)));
},
pageJump: function (url) {
location.href = url;
},
log: function () {
for(key in arguments){
console.log(JSON.parse(JSON.stringify(arguments[key])));
}
},
copy: function (source) {
var result = source instanceof Array ? [] : {};
for (var key in source) {
result[key] = typeof source[key] === 'object' ? this.copy(source[key]) : source[key];
}
return result;
},
params: function () {
var url = window.location.search;
if (url.indexOf("?") != -1) {
var str = url.substr(1),
strs = str.split("&"),
key = new Array(strs.length),
value = new Array(strs.length),
params = {};
for (var i = 0; i < strs.length; i++) {
key[i] = strs[i].split("=")[0]
value[i] = unescape(strs[i].split("=")[1]);
params[key[i]] = value[i]
}
return params;
}
},
getTime: function (date, format) {
var text = '',
parts = [],
fn, match;
while (format) {
match = /((?:[^yMdHhmsaZEwG']+)|(?:'(?:[^']|'')*')|(?:E+|y+|M+|d+|H+|h+|m+|s+|a|Z|G+|w+))(.*)/.exec(format);
if (match) {
parts = parts.concat([].slice.call(match, 1));
format = parts.pop();
} else {
parts.push(format);
format = null;
}
}
parts.forEach(function(value) {
fn = DATE_FORMATS[value];
text += fn ? fn(new Date(date))
: value.replace(/(^'|'$)/g, '').replace(/''/g, "'");
});
return text;
},
tip: function (msg,time) {
var html = '<div class="weui_dialog_alert" id="tip">' +
'<div class="weui_mask"></div>' +
'<div class="weui_dialog">' +
'<div class="weui_dialog_hd"><strong class="weui_dialog_title">提示</strong></div>' +
'<div class="weui_dialog_bd">' + msg + '</div>' +
'<div class="weui_dialog_ft">', time = time || 2000;
if ($('#tip').length) {
$('#tip').find('.weui_dialog_bd').html(msg);
$('#tip').show();
} else {
$('body').append(html);
}
$('#tip').off().click(function(){
$(this).hide();
});
setTimeout(function () {
$('#tip').hide();
}, time);
},
extend: function () {
var _extend,
_isObject,
arr = arguments,
result = {},
i; _isObject = function (o) {
return Object.prototype.toString.call(o) === '[object Object]';
}; _extend = function self(destination, source) {
var property;
for (property in destination) {
if (destination.hasOwnProperty(property)) { // 若destination[property]和sourc[property]都是对象,则递归
if (_isObject(destination[property]) && _isObject(source[property])) {
self(destination[property], source[property]);
}
; // 若sourc[property]已存在,则跳过
if (source.hasOwnProperty(property)) {
continue;
} else {
source[property] = destination[property];
}
}
}
}; if (!arr.length) return {}; for (i = arr.length - 1; i >= 0; i--) {
if (_isObject(arr[i])) {
_extend(arr[i], result);
}
} arr[0] = result; return result;
},
forEach: function (obj, iterator, context) {
var key, length;
if (obj) {
if (typeof obj == 'function') {
for (key in obj) {
// Need to check if hasOwnProperty exists,
// as on IE8 the result of querySelectorAll is an object without a hasOwnProperty function
if (key != 'prototype' && key != 'length' && key != 'name' && (!obj.hasOwnProperty || obj.hasOwnProperty(key))) {
iterator.call(context, obj[key], key, obj);
}
}
} else if ($.isArray(obj)) {
var isPrimitive = typeof obj !== 'object';
for (key = 0, length = obj.length; key < length; key++) {
if (isPrimitive || key in obj) {
iterator.call(context, obj[key], key, obj);
}
}
} else if (obj.forEach && obj.forEach !== Utilities.forEach) {
obj.forEach(iterator, context, obj);
} else {
for (key in obj) {
if (obj.hasOwnProperty(key)) {
iterator.call(context, obj[key], key, obj);
}
}
}
}
return obj;
}
    };

    Utilities.routeParams = Utilities.params();

常用js方法,extend合并对象,copy深拷贝对象,tip提示信息框,getTime返回自定义格式时间,params获取浏览器地址参数,log打印相关变量,forEach循环对象或数组