dojox/validate/isbn.js

• Provides:

  • dojox.validate.isbn

• dojox.validate.isValidIsbn

  • type

    Function

  • parameters:
    • value: (typeof String)

      An ISBN to validate

  • source: [view]
     var len, sum = 0, weight;
     if(!dojo.isString(value)){
      value = String(value);
     }
     value = value.replace(/[- ]/g,''); //ignore dashes and whitespaces
     len = value.length;
    
    
     switch(len){
      case 10:
       weight = len;
       // ISBN-10 validation algorithm
       for(var i = 0; i < 9; i++){
        sum += parseInt(value.charAt(i)) * weight;
        weight--;
       }
       var t = value.charAt(9).toUpperCase();
       sum += t == 'X' ? 10 : parseInt(t);
       return sum % 11 == 0; // Boolean
       break;
      case 13:
       weight = -1;
       for(var i = 0; i< len; i++){
        sum += parseInt(value.charAt(i)) * (2 + weight);
        weight *= -1;
       }
       return sum % 10 == 0; // Boolean
       break;
     }
     return false;
  • summary

    Validate ISBN-10 or ISBN-13 based on the length of value

  • return_summary

    Boolean

  • returns

    Boolean

• dojox.validate.isbn

  • type

    Object

  • summary

• dojox.validate

  • type

    Object

  • summary

• dojox

  • type

    Object

  • summary