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try...catch 语句

try...catch 语句 !DOCTYPE htmlhtmlheadmeta charset="utf-8"title滴答编程(dida100.com)/titlescriptvar txt="";function message(){try {adddlert("Welcome guest!");}catch(err) {txt="本页有一个错误。\n\n";txt+="错误描述：" + err...

带有确认框的 try...catch 语句

带有确认框的 try...catch 语句 !DOCTYPE htmlhtmlhead meta charset="utf-8" title滴答编程(dida100.com)/title scriptvar txt="";function message(){try{adddlert("Welcome guest!");}catch(err){txt="本页有一个错误。\n\n";txt+="单击...

onerror 事件

onerror 事件 !DOCTYPE htmlhtmlhead meta charset="utf-8" title滴答编程(dida100.com)/title scriptonerror=handleErr;var txt="";function handleErr(msg,url,l){txt="该页面有一个错误\n\n";txt+="错误: " + msg + "\n";txt+="URL: " + u...

实例解析

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