我是想把localStorage里面的数据显示到ul里面， 尝试过多次没有成功 以下是html和JavaScript的代码 希望能帮助我解决不显示的问题

Question

我是想把localStorage里面的数据显示到ul里面，
尝试过多次没有成功
以下是html和JavaScript的代码
希望能帮助我解决不显示的问题

```html
<div id="sh_for_rmd_rods">
                        <div class="rods_font-del_box">
                                <span class="rods_font">搜索历史
                                <span id="Rod_Del" class="rods_del">全部删除
                        </div>
                        <ul id="ShowHistory">
                            
                        
                </div>

```javascript
 SearchBtn.onclick = function(){
        let userVal = SearchInput.value;
        let localCon = localStorage.getItem('SearchInputValue');
        arr = localStorage.getItem('SearchInputValue') ? arr = JSON.parse(localStorage.getItem('SearchInputValue')) : [];
        if(userVal == null||userVal == ''||userVal == undefined||userVal.replace(/(^\s*)|(\s*$)/g, "")==''){
            return;
        }else{
            let arr = [];
        }
        if(arr.indexOf(userVal)== -1){
            arr.unshift(userVal);
         };
         if(arr.length >= 15){
            arr.splice(arr.indexOf(14),1);
         };
         localStorage.setItem('SearchInputValue',JSON.stringify(arr));
         showLog();
        };
        rods_del.onclick = function () {
            localStorage.removeItem('SearchInputValue');
        };
         ShowHistory.addEventListener('click', function(e){
            if(e.target.nodeName == 'Li'){
                let datas = JSON.parse(localStorage.getItem('SearchInputValue'));
                console.log(e.target.dataset['index']);
                datas.splice(e.target.dataset['index'],1);
                localStorage.setItem('SearchInputValue',JSON.stringify(datas));
                showLog();
            };
         });
         function showLog(){
            let locals = JSON.parse(localStorage.getItem('SearchInputValue')) || [];
            let showHistorysHtml = '';
            for(let i = 0; i <locals.length; i++){
                showHistorysHtml += '
+locals[i]+
';
            }
            ShowHistory.innerHTML = showHistorysHtml;
         };

Answer 1

在这个函数中打印一下showHisorysHtml看看有值吗