Pure JS Implementation Click the Select All/all uncheck checkbox function

Html

<id= "select_direction"  type= "button"  onclick= " Select_check (); " select_direction = "F" value = "Select All/Select All" />

Js

//JS Select all check box buttonfunctionSelect_check () {//get all input collections    varObj_input = document.getelementsbytagname (' input '); varobj_input_checked = []; varObj_select_check = document.getElementById (' select_direction ')); //get all IDs containing checked_ worth collection     for(varI=0;i < Obj_input.length; i++)    {        varres = Obj_input[i].id.match (' Checked_ '); if(Res! =NULL) {Obj_input_checked.push (obj_input[i]); }    }        //Select all check boxes    if(Obj_select_check.getattribute (' select_direction ') = = ' F ')    {         for(varI=0;i < Obj_input_checked.length; i++) {obj_input_checked[i].checked=true; } obj_select_check.setattribute (' Select_direction ', ' t '); }    //Cancel all check boxes    Else    {         for(varI=0;i < Obj_input_checked.length; i++) {obj_input_checked[i].checked=false; } obj_select_check.setattribute (' Select_direction ', ' F '); }}

Pure JS Implementation Click the Select All/all uncheck checkbox function