Trim functionality on web in JavaScript

Trim functionality on web in JavaScript

You Can View User Feedback To This Tip

Many times we wish that how nice it would be if we would have @Trim functionality in JavaScript.

You can have the same.
Use this trim(strln) function.
Just put this function in the JSHeader and call the same like this.

trim(document.forms[0].fieldName.value);

This will trim the whole value, like @Trim function. 


//Trim Function
function trim(strIn)
{
	strOut = strIn;

	for (var t = 0; t <= (strIn.length -1); t++ )
	 {		
	 	if (  strIn.charAt(t) != " ")
			{	
				strIn = strOut;			
				for (var I = strIn.length-1 ;I >= 0  ; I-- )
				 {				 		
				    if (  strIn.charAt( I ) != " ")
					{	  
					 	return (strOut) ;	 
					}
				 	else
					{ 
						strOut = strIn.substring(0, I );
					 }   
			   	   }
			 }

		 else
		 { 
			strOut = strIn.substring( t+1, strIn.length);
		}   
	}
	return(strOut);
}

USER FEEDBACK TO THIS TIP

  • I have seen a TIP for @TRIM posted on 07/18/2001 and I tried to use it but it is not removing the redundant spaces in between the characters like " aaa bbb "to "aaa bbb." You can use this JavaScript code in place of the @TRIM formula language function. It will remove all leading, trailing & redundant spaces between a string.

    function trim(inputString)
{ 
//String1

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  •  = inputString.replace(/^s+/,""); // trim leading white space   // this JAVA code is not working sometime with domino.
//String2 = String1.replace(/s+$/,""); // trim trailing white space     //this JAVA code is not working sometime with domino.
// added another condition in the end to remove ending space.
 	finalText = "";
      lastChar = " ";
      for(x = 0; x < inputString.length; x++) // with this loop we will delete all redundant spaces
          {
           curChar = inputString.charAt(x);
           if ((curChar != " ") || (lastChar != " "))
              {
      			finalText += curChar;
              }
            lastChar = curChar;
           }
      if (finalText.charAt(finalText.length - 1) == " ")  // this will remove the ending/trailing space.
      {
       finalText = finalText.substring(0, finalText.length - 1);
      }
      return finalText;
}
    — Faran Siddiqy

This was first published in July 2001

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