Detailed analysis of javascript traversal control instances_javascript skills

js traverses page controls,

Copy code The code is as follows:

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 method:

Copy code The code is as follows:

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

JS traversal control value

Copy code The code is as follows:

"width: 100px">
: 100px">
 🎜>                                                                                                                          table>






Traverse the page text control code

Copy code

The code is as follows:

Function Texts ()
{
// var Els = Document.GetelementsBytagname ("*"); // Els get all the controls of the page
Var Els = ("Input "); //The above is also possible, which can reduce loops
                                                                                                                             els[i].type == "text" )
                                                                                                                                                                                                                                                                                      alert(msgs);
}