The check box remains selected after turning the page

function batchdel() {//
        var chk_value =[]; 
            $("input[name="ids"]:checked").each(function(){ //
                chk_value.push($(this).val());
            });
            if (chk_value.length==0) {
                alert("");
                return false;
            }
            if (chk_value.length > 0) {
                var msg = "" + chk_value + "";
                if (confirm(msg) == true) {
                    location.href = "<%=basePath%>user/batchDelete?chk_value=" + chk_value;
                    return true;
                } else {
                    return false;
                }
            }
    }    
    
    var checkedIds=""; //id
    /**
     * 
     * @return
     */
    function changeIds(){
        var oneches=document.getElementsByName("ids");
        for(var i=0;i<oneches.length;iPP){
            if(oneches[i].checked==true){
                 //
                if(!contains(checkedIds,oneches[i].value)){
                     checkedIds+=oneches[i].value+",";
                     //console.log(oneches[i].value);
                }
             }
            if(oneches[i].checked==false){
                // idid
                if(contains(checkedIds,oneches[i].value)){
                    checkedIds=checkedIds.replace((oneches[i].value+","),"");
                }
             }
         }
     }
    /**
     * 
     * @return
     */
    function getChecked(){
        if(checkedIds==""){
            return;
        }
        var oneches=document.getElementsByName("ids");
        
        for(var i=0;i<oneches.length;iPP){
            //id
            if(contains(checkedIds,oneches[i].value)){
                 oneches[i].checked="checked";
                 //console.log(oneches[i].value);
            }
         }
     }
    /**
     * 
     * @param obj
     * @param ele
     * @return
     */
    function contains(obj, ele) {
        //console.log(obj);
        //console.log(ele);
        if(obj==""){
            return;
        }
        /*obj*/
        var arr = obj.split(",");
        //console.log(arr);
        var i = arr.length;
        while (i--) {
            if (arr[i] == ele) {
                return true;  
            }  
        }  
        return false;  
    }
    function handleClick(){
          changeIds();
          getChecked();
          contains("1","2");
        }

No error is reported. There is output in the console, but no effect is achieved

function changeIds(){ var oneches=document.getElementsByName("ids"); for(var i=0;i<oneches.length;iPP){ // console.log(oneches[i].checked) if(oneches[i].checked==true){ // if(!contains(checkedIds,oneches[i].value)){ checkedIds+=oneches[i].value+","; } } if(oneches[i].checked==false){ if(contains(checkedIds,oneches[i].value)){ checkedIds=checkedIds.replace((oneches[i].value+","),""); } } } }

function getChecked(){ if(checkedIds==""){ return; } var oneches=document.getElementsByName("ids"); for(var i=0;i<oneches.length;iPP){ //id if(contains(checkedIds,oneches[i].value)){ oneches[i].checked="checked"; } } }