JavaScript对象反射

来源：互联网发布：php undefined symbol 编辑：程序博客网时间：2024/05/17 04:17
反射DOM对象和自定义对象
看代码吧
<html><head><title>JavaScript反射工具</title><style type="text/css">#show{ width:400px;height:300px;border:red solid 1px;overflow:scroll;}#main{ width:500px;text-align:left;margin-left:auto;margin-right:auto;} </style><script type='text/javascript'>//生成选择的反射对象并反射function SwitchObj(){     var obj;     var switchobj=document.getElementById('selects');     if(switchobj.value=="op_div"){       obj=document.createElement("div");       }     if(switchobj.value=="op_select"){       obj=document.createElement("select");       }     if(switchobj.value=="op_p"){       obj=document.createElement("p");       }     if(switchobj.value=="op_span"){       obj=document.createElement("span");       }     if(switchobj.value=="op_table"){       obj=document.createElement("table");       }     if(switchobj.value=="op_tr"){       obj=document.createElement("table");       }     if(switchobj.value=="op_window"){       obj=document.createElement("window");       }     if(switchobj.value=="op_document"){       obj=document.createElement("document");       }     Assembly(obj);}//反射对象function Assembly(obj){      var order=0;      if(obj){    var assstr="反射对象:"+obj.tagName+"<br/>"    for(key in obj){    order++;    assstr+=order+"----"+key+"<br/>";}    Show(assstr);}}//将反射信息输出function Show(msg){      var showobj=document.getElementById('show');      if(showobj){    showobj.innerHTML="";    showobj.innerHTML=msg;         }}</script></head><body><div id="main"><h1>JavaScript反射工具</h1><div id="show"></div><input type="button" id="btn_assembly" value="反射" onclick="SwitchObj('select');" /><select id="selects"><option value='op_div'>div</option><option value='op_p'>p</option><option value='op_span'>span</option><option value='op_table'>table</option><option value='op_select'>select</option><option value='op_document'>document</option><option value='op_window'>window</option></select></div></body></html>