驗證（bassistance插件）需要（依賴回調）問題

Question

在我的客戶登記表，我有以下規則

// Define the div containing validation messages 
var container = $('#clientErrorWrapper'); 
// Start validation routine 
// validate the form when it is submitted 
var validator = $("#frmEdit").submit(function() { 
    // update underlying textarea before submit validation 
    tinyMCE.triggerSave(); 
    }).validate({ 
    errorContainer: container, 
    errorLabelContainer: $("ul", container), 
    wrapper: 'li', 
    // start rules (add new rules as necessary) 
     rules: { 
      firstname: { 
       required: true 
      }, 
      lastname: { 
       required: true 
      }, 
      email: { 
       required: true 
      }, 
      address1: { 
       required: true 
      }, 
      city: { 
       required: true 
      }, 
      state_province: { 
       required: function(element) { 
        return $("#country").val() == 'US'; 
        } 
      }, 
      postcode: { 
       required: true 
      }, 
      country: { 
       required: true 
      } 
    // finish rules 
    } 

我想延長州（省）規則，使這個字段是必須的，如果國家等於CA或非盟，我怎麼能達到這一點。

Answer 1

你可以這樣做：

 state_province: { 
      required: function(element) { 
       var c = $("#country").val(); 
       return c=='US' || c=='CA' || c=='AU'; 
       } 
     } 

無需得到比，除非你的名單會越來越長一點比較複雜。

但是，如果名單不斷增加，您可以使用jQuery's .inArray()：

 state_province: { 
      required: function(element) { 
       return $.inArray($("#country").val(), ['US','CA','AU']) > -1; 
       } 
     }