不知道哪里alert undefined 用下面的语句是js报错.F12能提示报错的地方window.alert=function(aa){ if (typeof (aa)"undefined"){ throw "就是这";}};
2017-10-31 17:40
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不知道哪里alert undefined 用下面的语句是js报错.F12能提示报错的地方
var oldalert=window.alert;
window.alert=function(aa){ if (typeof (aa)=="undefined"){ throw "就是这";}else{oldalert(aa)}};
这样浏览器会报错...就能定位到错误位置了.
var oldalert=window.alert;
window.alert=function(aa){ if (typeof (aa)=="undefined"){ throw "就是这";}else{oldalert(aa)}};
这样浏览器会报错...就能定位到错误位置了.
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