Uncaught TypeError: Cannot read property 'hasOwnProperty' of null
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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:69public.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:1Uncaught 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)
}
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