Returns a substring beginning at a specified location and having a specified length.
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stringvar.substr(start [, length ])   | 
Arguments
      - 
          stringvar
        
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Required. A string literal or String object from which the substring is extracted.
         
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          start
        
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Required. The starting position of the desired substring. The index of the first character in the string is zero.
         
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          length
        
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Optional. The number of characters to include in the returned substring.
         
     Remarks
Example
    
      
        The following example illustrates the use of the substr method.
      
    
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function SubstrDemo(){
   var s, ss;                //Declare variables.
   var s = "The rain in Spain falls mainly in the plain.";
   ss = s.substr(12, 5);  //Get substring.
   return(ss);               // Returns "Spain".
} | 
 
   
Requirements
See Also