分享代码,基于MicroSoftAjax的JS代码之1.2:异常处理(TestException.js)

Type.registerNamespace("TestException");



TestException.TestException1=function() { 

    if(!TestException.PleaseClearException())return;

    CanYouCatchMe

    } //end function



TestException.TestException2 = function() { 

    try{

        if(!TestException.PleaseClearException())return;

        CanYouCatchMe();

        }

    catch(e){

		var _msg = "捕获到异常:\n" + e.message;//由于微软扩展了Error对象,message属性不存在浏览器兼容问题

        JSHelper.ThrowError(_msg);

        }

    finally{}

    } //end function



TestException.ShowExceptionMessage=function(){

    alert(JSHelper.ErrString);

    }



TestException.ClearExceptionMessage= function(){

    JSHelper.ErrString="";

	JSHelper.DisplayControl("btnShowException",false);

	JSHelper.DisplayControl("btnClearException",false);

    }



TestException.PleaseClearException = function(){

    var _bl = (JSHelper.ErrString=="");

    var _s = "请先清除异常,然后再来";

    if (!_bl)alert(_s);

    return _bl;

}



TestException.Adder = function(num1,num2){

    return 2+num1;

    }



TestException.TestCode = function(){

    var _lblResult = document.getElementById("lblResult")

	if(!_lblResult){JSHelper.ThrowError("控件lblResult不存在");}

    var _fail = "测试失败";

    var _succ = "测试成功";

	var _Result = "Adder(1,2)==3";

	_Result += (TestException.Adder(1,2)==3) ? _succ : _fail;

    _Result += ", Adder(1,3)==4"

	_Result += (TestException.Adder(1,3)==4) ? _succ : _fail;

	_lblResult.innerHTML = _Result;

    }



TestException.CreateAction=function(){

	var _btnTestException1 = $get('btnTestException1');

	if(_btnTestException1){_btnTestException1.onclick=TestException.TestException1;}

	var _btnTestException2 = $get('btnTestException2');

	if(_btnTestException2){_btnTestException2.onclick=TestException.TestException2;}

	var _btnTestException3 = $get('btnTestException3');

	if(_btnTestException3){_btnTestException3.onclick=TestException.TestCode;}

	var _btnShowException = $get('btnShowException');

	if(_btnShowException){_btnShowException.onclick=TestException.ShowExceptionMessage;}

	var _btnClearException = $get('btnClearException');

	if(_btnClearException){_btnClearException.onclick=TestException.ClearExceptionMessage;}

}



window.onload=TestException.CreateAction;