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Boolean or not ?

SOLVED
jeanette17
New Member

Re: Boolean or not ?


@BenoitB wrote:

We have the need to set/get boolean value on components where sometimes property, or test data is not a boolean.

 

Please share and discuss about your best way to determine if a value is a boolean.

 

Mine is below.

 

 

 

/**
 * <a id="stringToBoolean"></a>
 * Renvoie le type boolean true ou false selon la chaîne en entrée :<br>
 * - "true", "yes", "on", "1", "oui", "vrai", "checked" renvoie true<br>
 * - "false", "no", "off", "0", "non", "faux", "unchecked", "", null renvoie false<br>
 * - autres valeurs, essaye de convertir en String pour l'évaluer, le cas échéant renvoie false
 * @function
 *  {string} [value=""] - Chaîne à convertir
 * @returns {boolean} Renvoie <b>true</b> ou <b>false</b>
 */
function stringToBoolean (value = "") {
  if (typeof value != 'string') {
    try {
      value = value.toString();
    }
    catch(e) {
     value = "";
    }
  }
  switch(value.toLowerCase().trim()){
    case "true" : 
    case "yes" : 
    case "on" :
    case "1" : 
    case "oui" :
    case "vrai" :
    case "checked" :
      return true;
    case "false" : 
    case "no" : 
    case "0" : 
    case "off" :
    case "" :
    case "non" :
    case "faux" :
    case "unchecked" :
    case null : 
      return false;
    default: 
      return Boolean(value);
  }
}

 

 

 


Thanks for the support 

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