JS clears multi-text box and text domain sample code

Click the button to use Javascript to clear all text boxes on the page | text field, the Code is as follows:
Copy codeThe Code is as follows:
<Script type = "text/javascript">
<! --
Function cls (){
Var sum = 0;
Var t = document. getElementsByTagName ("INPUT ");
For (var I = 0; I <t. length; I ++ ){
If (t [I]. type = 'text '){
++ Sum;
T [I]. value = ""; // clear
}
}
Var sum1 = 0;
Var t1 = document. getElementsByTagName ("textarea ");
For (var i1 = 0; i1 <t1.length; i1 ++ ){
If (t1 [i1]. type = 'textarea '){
++ Sum1;
T1 [i1]. value = ""; // clear
}
}
Alert ('total page TEXT: '+ sum +' \ n' + 'total page TextArea:' + sum1 + ');
}
// -->
</Script>