try{}catch(e){}

异常：try{}catch(e){}//异常捕获;救急用;也可以当做if来使用;
                                window.onload=function(){
                                            var oBox=document.getElementById("box");
                                            oBox.onclick=function(){
                                            try{alert(getComputedStyle(oBox,false).width)}//可以用则用它;chrome,ff,ie9++;
                                            catch(e){  //e:关于错误的信息;
                                                                //补救的代码:
                                                                //alert(e.message);//错误的详细信息;
                                            alert(oBox.currentStyle.width) //要么用它;ie系列；
                                            }
                                        }
                                    }

时间： 2024-12-06 08:18:09

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