Delete Columns to Make Sorted II LeetCode solution in JavaScript

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var minDeletionSize = function (strs) {
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  const length = strs.length;
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  let inOrder = true,
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    count = 0,
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    deleteIndex = 0;
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  while (strs[0].length > 0) {
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    inOrder = true;
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    for (let i = 0; i < length; i++) {
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      if (strs[i] > strs[i + 1]) {
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        inOrder = false;
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        for (let index = 0; index < strs[i].length; index++) {
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          if (strs[i][index] > strs[i + 1][index]) {
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            deleteIndex = index;
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            break;
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          }
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        }
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      }
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    }
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    for (let i = 0; i < length; i++) {
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      strs[i] =
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        strs[i].substring(0, deleteIndex) + strs[i].substring(deleteIndex + 1);
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    }
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    if (inOrder) {
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      break;
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    } else {
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      count++;
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    }
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  }
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  return count;
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};