IOS上拉加载报错

请问，上拉加载在安卓上面运行没问题 但是在IOS上面运行报这个错是怎么回事？

[ERROR] : TypeError: exceptions[i].test is not a function. (In 'exceptions[i].test(el[i])', 'exceptions[i].test' is undefined)
file name:js/mui.js
line no:4197