1. I wrote a WeChat applet, a Sudoku game, to determine whether it meets the requirements (Sudoku rules) based on the number entered. However, I encountered a problem, how to find the position of the number entered by the user, because it needs to be based on the number entered by the user. The position is passed into the corresponding script file to determine whether the rules are met, but because I am not very proficient in js, I cannot solve the positioning problem.

1. <view class="page-body">

   <view class="bc" wx:for="{{numbers}}" wx:for-item="row" >
       <view wx:for="{{row}}" class="bc_ bc_{{item}}" bindtap="oninput"> 
         <input wx:if="{{item == 0}}" auto-focus wxkey="*this" maxlength="1" value="" onkeyup="this.value=this.value.replace(/\D/g,'')" onafterpaste="this.value=this.value.replace(/\D/g,'')" type="number" style="color:#000000" bindinput="EventHandle"/>
         <view wx:else>{{item}}</view>
       </view>
   </view>

   </view>

Where numbers is an array in the script file, and the style is implemented using two loops.
It will determine whether each number is zero (the array we wrote manually at the beginning, 0 represents user input). If it is zero, no characters (strings) will be displayed here.

Here is the front-end display code and display effect. The blank space is used for users to fill in numbers, but I don’t know how to find where the user entered the numbers. I hope someone can guide me. one time.