function test(){
if(document.all['name_1'])
alert("name_1 is exist!");
if(document.getElementById('name_1') != null)
alert("name_1 is also exist");
}
if(document.all['name_1'])
alert("name_1 is exist!");
if(document.getElementById('name_1') != null)
alert("name_1 is also exist");
}
解决方案 »
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