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[JavaScript] Selects all check boxes, does not select all, and selects inverse check boxes.

Source: Internet
Author: User
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Document directory
  • Select All or all
  • Invert Selection
  • Sample program

You can use a simple program to select all check boxes, select none, or select inverse ones.

In addition, you can set the variable part as the JS parameter for code reuse.

Select All or all

The first parameter is the check box name, and the second parameter is select all or not.

function allCheck(name,boolValue) {var allvalue = document.getElementsByName(name); for (var i = 0; i < allvalue.length; i++) {      if (allvalue[i].type == "checkbox")           allvalue[i].checked = boolValue;           }}

Invert Selection

The parameter is the name of the check box.

function reserveCheck(name){var revalue = document.getElementsByName(name); for(i=0;i<revalue.length;i++){   if(revalue[i].checked == true) revalue[i].checked = false;  else revalue[i].checked = true;}}

Sample program 

<! Doctype HTML public "-// W3C // dtd xhtml 1.0 transitional // en" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <HTML xmlns = "http://www.w3.org/1999/xhtml">

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