The webpage often needs to dynamically generate multiple check boxes, and there is usually a "all-in" button to select all check boxes or cancel the selected.
But a question that needs attention is that when only one check box is left, you cannot use the check box Length property.
var selectallflag = false;
Function gotoforallselect () {var doc = document.form1; var l= doc.cheifselected.length if (l == null) {l = 1;} if (l == 1) {if (! selectallflag) {doc.cheifselected } else {doc.cheifselected.checked = false;}} else {for (i = 0; i
