Why it can not run in the jsbin( the output area is empty)?

here’s the question：
enter image description here

Input ：
３３２１０
００１３１
３１２２３
２００２２
２０００１

Output：
１２　１２　１７
１０　１７　１９
　９　　６　１４

Please write the calculation process using JavaScript in jsbin:
Step 1: Find the three-dimensional array that can be multiplied with the convolution kernel
Step 2: Multiply the one-dimensional array with the convolution kernel

here’s my problem
enter image description here