Javascript traverses the control instance for detailed resolution

2020-03-30 01:20:55
OfStack

Js traverses the page control,


 var inputArr = document.forms[0];
   for( var i = 0; i < inputArr.length; i++ ) {
    if( inputArr[i].type.toUpperCase() == "BUTTON" ) {
     inputArr[i].disabled="disabled";
    }else if( inputArr[i].type.toUpperCase() == "FILE" ){     
     inputArr[i].readonly=true;
    }
   }

Another way:


var Elements = document.getElementsByTagName_r("*");
var msgs;
var i;
for ( i in Elements ) {
if ( Elements[i].type == "text" ) {
alert(Elements[i].value);
}
}

JS traverses the value of the control


<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
    <title>JS Traverses the value of the control </title>
    <mce:script type="text/javascript"><!--
    function Submit()
    {
       var Text=document.getElementsByTagName("input");
      var Array="";
        for(var i=0;i<Text.length;i++)
        {
            if(Text[i].type=="text"||Text[i].type=="checkbox")
            {
              Array+=",";
              Array+=Text[i].value;
            }

        }
         Array=Array.substring(1,Array.length);
         alert(Array);
    }

// --></mce:script>
</head>
<body>
    <table>
        <tr>
            <td style="width: 100px">
                <input id="Checkbox1" type="checkbox" value=" Hu Guo " /> Hu Guo </td>
            <td style="width: 100px">
                <input id="Text1" type="text" value="ws_hgo" /></td>
            <td style="width: 100px">
                <input id="Button1" type="button" value="button" onclick="Submit(this)" /></td>
        </tr>
         </table>
</body>
</html>

Traversing the page text control code


        function Texts() 
        { 
             //var els= document.getElementsByTagName("*");   //els Gets all the controls for the page  
             var els= document.getElementsByTagName("INPUT"); //The top one is also ok, so you can reduce the loop
             var msgs=""; 
             for (var i=0;i<els.length;i++ )  
             { 
                 if (els[i].type == "text" )  
                 { 
                     //Get control ID
                     msgs += els[i].id + ","; 
                 } 
             } 
             alert(msgs); 
         }