fun.js

来源：互联网发布：苹果mac双系统切换编辑：程序博客网时间：2024/05/29 03:29

/**
* 判断是否null
* @param data
*/
function isNull(data) {
return(data == "" || data == undefined || data == null) ? true : false;

}

/**
* 生成随机数
* @param data
*/
function uuid(len, radix) {
var chars = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz'.split('');
var uuid = [],
i;
radix = radix || chars.length;

if(len) {
// Compact form
for(i = 0; i < len; i++) uuid[i] = chars[0 | Math.random() * radix];
} else {
// rfc4122, version 4 form
var r;

// rfc4122 requires these characters
uuid[8] = uuid[13] = uuid[18] = uuid[23] = '-';
uuid[14] = '4';

// Fill in random data. At i==19 set the high bits of clock sequence as
// per rfc4122, sec. 4.1.5
for(i = 0; i < 36; i++) {
if(!uuid[i]) {
r = 0 | Math.random() * 16;
uuid[i] = chars[(i == 19) ? (r & 0x3) | 0x8 : r];
}
}
}

return uuid.join('');
}

百度地图通过ip获得定位信息 var url = "https://api.map.baidu.com/location/ip?ak=ak";

      $.ajax(url, {          dataType: 'jsonp',          crossDomain: true,          success: function(data) {              console.log(data);          }        });

data 值：

{      address: "CN|吉林|长春|None|CERNET|1|None",      content:     {          address: "吉林省长春市",          address_detail:         {              city: "长春市",              city_code: 53,              district: "",              province: "吉林省",              street: "",              street_number: ""          },          point:  #当前城市中心点，注意当前坐标返回类型，        {            #当前示例为bd09ll，可直接用于在百度地图上绘制展示              x: "125.31364243",                  y: "43.89833761"          }      },      status: 0  }

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