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JavaScript [Object,object]

Source: Internet
Author: User
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When assigning an object to an HTML tag's properties today, it is a bit strange to find that the value taken is [Object,object].

The code is as follows:

1 <!DOCTYPE HTML>2 <HTML>3     <Head>4         <MetaCharSet= "UTF-8">5         <title>[Object Object]</title>6         <Scripttype= "Text/javascript"src=".. /.. /trd/jquery/jquery-1.9.1.min.js "></Script>7         <Scripttype= "Text/javascript">8             $(function(){9                 varStudent={name:"Xiao Ming", Gender:"male"};Ten                 $("#txt"). attr ("RowData", student);//Add the RowData property to the label with the ID txt and the value to the student object One                  A Console.log ($ ("#txt"). attr ("RowData"));//console output is: [Object Object] - Alert ($ ("#txt"). attr ("RowData"));//The information in the popup box is: [Object Object] -             }); the         </Script>         -     </Head> -     <Body> -         <inputtype= "text"name= "txt"ID= "txt"/> +     </Body> - </HTML>

So how do you get the value of an object? My practice is to assign values by first converting the student object to a JSON string using the Json.stringify method.

The code is as follows:

1 <!DOCTYPE HTML>2 <HTML>3     <Head>4         <MetaCharSet= "UTF-8">5         <title>[Object Object]</title>6         <Scripttype= "Text/javascript"src=".. /.. /trd/jquery/jquery-1.9.1.min.js "></Script>7         <Scripttype= "Text/javascript">8             $(function(){9                 varStudent={name:"Xiao Ming", Gender:"male"};Ten                 $("#txt"). attr ("RowData", json.stringify (student));//Add the RowData property to the label with the ID txt and the value to the student object One                  A Console.log ($ ("#txt"). attr ("RowData"));//Console output is: {"name": "Xiaoming", "gender": "Male"} - Alert ($ ("#txt"). attr ("RowData"));//The information in the popup box is: {"name": "Xiaoming", "gender": "Male"} -             }); the         </Script>         -     </Head> -     <Body> -         <inputtype= "text"name= "txt"ID= "txt"/> +     </Body> - </HTML>

But I have another question is: Why the alert (object) output value is [Object,object], if you see this article Bo friends know the answer, but also hope to enlighten.

JavaScript [Object,object]

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