1、错误描述

jquery-1.9.1.min.js:69 Synchronous XMLHttpRequest on the main thread is deprecated because of its detrimental effects to the end user's experience. For more help, check https://xhr.spec.whatwg.org/.
send @ jquery-1.9.1.min.js:69
public.js:430
Uncaught TypeError: Cannot read property 'hasOwnProperty' of null

at Object.<anonymous>
at Function.each (jquery-1.9.1.min.js:35)

at HTMLTableElement.loadComplete
at Object.success (jquery.jqGrid.src.js:2012)

at c (jquery-1.9.1.min.js:35)

at Object.fireWith [as resolveWith] (jquery-1.9.1.min.js:35)

at k (jquery-1.9.1.min.js:69)

at XMLHttpRequest.r (jquery-1.9.1.min.js:69)
porder.js:769 payType:1

Uncaught TypeError: Cannot read property 'hasOwnProperty' of null

at Object.<anonymous>
at Function.each (jquery-1.9.1.min.js:35)

at HTMLTableElement.loadComplete
at Object.success (jquery.jqGrid.src.js:2012)

at c (jquery-1.9.1.min.js:35)

at Object.fireWith [as resolveWith] (jquery-1.9.1.min.js:35)

at k (jquery-1.9.1.min.js:69)

at XMLHttpRequest.r (jquery-1.9.1.min.js:69)


2、错误原因

      hasOwnProperty()函数用于指示一个对象自身(不包括原型链)是否具有指定名称的属性,一般语法是:

     对象.hasOwnProperty(属性值),如果对象为null,就会报错;在判断之前先判断对象是否为空


3、解决办法

if(对象 != null)

{

对象.hasOwnProperty(属性值)

}