Method _enterFormulaMode

src/AutoNumeric.js:6449–6457

* Enter the special 'formula mode' where users can enter a math expression that will be evaluated on blur and `enter` * @private

()

     * @private
     */
    _enterFormulaMode() {
        if (this.settings.formulaMode) {
            this.formulaMode = true; // 'Deactivate' the normal event listeners behavior
            // Clear the input and add a '=' sign to it
            AutoNumericHelper.setElementValue(this.domElement, '=');
            // Put the caret after the `=` character
            AutoNumericHelper.setElementSelection(this.domElement, 1);
        }
    }

    /**
     * Exit the formula mode