var util = {
/**
* 获取url参数.
* @param {String} [name] 参数名称，无此参数时返回所有参数
* @return {String|Object} name存在时返回相应的值，否则返回所有参数
*/
getUrlParam: function (name) {
var url = window.location.search.substr(1)||window.location.hash.substr(1);
if (!url) {
return '';
}
if (name) {
var value = new RegExp('(?:^|&)' + name + '=([^&]*)(&|$)', 'g').exec(url);
return util.htmlEncodeAll(value && window.decodeURIComponent(value[1]) || '');
}
var result = {};
var reg = /(?:^|&)([^&=]+)=([^&]*)(?=(&|$))/g;
var item;
/* jshint boss: true */
while (item = reg.exec(url)) {
result[item[1]] = util.htmlEncodeAll(window.decodeURIComponent(item[2]));
}
return result;
},
/**
* 过滤html中的特殊符号
* @param {String} [e] 待过滤的html
* @return {String} 返回过滤后的html
*/
htmlEncodeAll: function (e) {
return null == e ? "" : e.replace(/\</g, "<").replace(/\>/g, ">").replace(/\&/g, "&").replace(/"/g, """).replace(/'/g, "'");
},
/**
* 添加script.
* @param {String} url js url
* @param {Function} [onload] 加载成功回调
* @param {Function} [onerror] 加载失败回调
* @return {HTMLElement} script引用
*/
addScript: function (url, onload, onerror) {
var script = document.createElement('script');
if (onload) {
script.onload = function () {
onload(script);
};
}
script.onerror = function () {
if (onerror) {
onerror(script);
} else if (onload) {
onload(script);
}
};
script.src = url;
document.head.appendChild(script);
return script;
},
/**
* 复制对象属性.
* @param {Object} toObj 复制到此对象
* @param {Object} fromObj 要复制的对象
*/
extend: function (toObj, fromObj) {
for (var key in fromObj) {
if (fromObj[key] !== 'undefined') {
toObj[key] = fromObj[key];
}
}
},
// Check if documentElement already has a given class.
hasClass: function (node, className) {
var regex;
regex = new RegExp(className, 'i');
return node.className.match(regex);
},
// Add one or more CSS classes to the <html> element.
addClass: function (node, className) {
var currentClassNames = null;
if (!this.hasClass(node, className)) {
currentClassNames = node.className.replace(/^\s+|\s+$/g, '');
node.className = currentClassNames + " " + className;
}
},
// Remove single CSS class from the <html> element.
removeClass: function (node, className) {
if (this.hasClass(node, className)) {
node.className = node.className.replace(" " + className, "");
}
},
/**
* 为url添加变量.
* @param {String} url
* @param {String|Object} name
* 为字符串类型时参数作为新增参数的名称，第三个参数不能缺省
* 为对象类型时参数为要增加的参数集合，属性为参数名称，值为参数值
* @param {String} value 变量值
* @return {String} 新的url
*/
urlAddParam: function (url, name, value) {
// 分割url，arr[1] 为头部，arr[2]为参数，arr[3]为hash
var arr = url.match(/([^\?#]*\??)([^#]*)?(#.*)?/);
var prefix = arr[1];
var param = arr[2];
if (param) {
prefix += param + '&';
} else if (arr[1].indexOf('?') === -1) {
prefix += '?';
}
var newParam = '';
if (typeof name === 'object') {
for (var key in name) {
newParam += '&' + key + '=' + encodeURIComponent(name[key]);
}
newParam = newParam.substr(1);
} else {
newParam = name + '=' + encodeURIComponent(value);
}
return prefix + newParam + (arr[3] || '');
},
/**
*模拟a标签跳转
*@param {string} url 要跳转的url
*@param {Boolean} isReplace 是否替换当前页
*/
locationRedirect: function (url, isReplace) {
if (isReplace) {
this.locationReplace(url);
}
if (os.ios) {
var $lr = $("#locationRedirect"),
ev = document.createEvent('HTMLEvents');
ev.initEvent('click', false, true);
if ($lr.length) {
$lr.attr("href", url);
} else {
$lr = $('<a id="locationRedirect" href="' + url + '" style="display:none;"></a>');
$(document.body).append($lr);
}
$lr[0].dispatchEvent(ev);
} else {
window.location.href = url;
}
},
/**
* 修复iOS 9.0和9.1 下 replace后 再次跳转页面后调用back会回到前2个页面.
* @param {String} url replace 的url
*/
locationReplace: function (url) {
if (os.ios && /^9\.[01]/.test(os.version)) {
history.replaceState({}, null, url);
location.reload();
} else {
location.replace(url);
}
},
};
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