show formula explanation for GridJs

To display formula explanation when hovering over a specific cell that contains a formula ,the steps are

Set load options.

for example:

 const option = {
     ...
     //set showFormulaExplain to true
    showFormulaExplain:true,
 };
  xs = x_spreadsheet('#gridjs-demo', option)

Set action URL for showFormulaExplain.

for example:

    const formulaExplainUrl = "/GridJs2/FormulaExplain";
    xs.setFormulaExplainUrl(formulaExplainUrl);

When the user moves the mouse over a cell that contains a formula, the action of display formula explanation will be triggered automatically by the spreadsheet application

Implement show formula explanation in serverside.

for example:

# The logic for formula explanation here can be implemented through a third-party library or custom logic.
# Implement your logic to get the detail explanation for the formula
def get_formula_explain(formula, locale):  
# replace your logic here     
    return text  
  
@app.route('/GridJs2/FormulaExplain', methods=['POST'])  
def formula_explain():  
    formula = request.form.get('v')  
    locale = request.form.get('locale')  
# here the formula is the formula in the cell ,etc "=SUM(B1:B10)"
# check if the formula is null or empty  
    if not formula:  
        return jsonify({  
            'Success': False,  
            'v': ''  
        }), 200  
      
    formula_explain = get_formula_explain(formula, locale)  
      
    return jsonify({  
        'Success': True,  
        'v': formula_explain  
    }), 200