CMXads javascript input string length limit function script

CMXads.com JavaScript String Limit Example

Limit the length of a string entered in a input.

Here we have a onkeyup and eval string length limit javascript example tutorial.
As you can see we have applied it to a textarea and the function is set at 500 characters.
Try it out and enter some text.

 

 name="comments" class="comments" required="required" onKeyPress="return taLimit(this)" onKeyUp="return taCount(this,'myCounter');" id="comments"



 maxL=50;
 var bName = navigator.appName;
 function taLimit(taObj) {
  if (taObj.value.length==maxL) return false;	return true;}
  
   function taCount(taObj,Cnt) {	
    objCnt=createObject(Cnt);objVal=taObj.value;	
	if (objVal.length>maxL) objVal=objVal.substring(0,maxL);
	if (objCnt) {if(bName == "Netscape"){objCnt.textContent=maxL-objVal.length;}
		else{objCnt.innerText=maxL-objVal.length;}}return true;}
		function createObject(objId) {if (document.getElementById) return document.getElementById(objId);
			else if (document.layers) return eval("document." + objId);	
			else if (document.all) return eval("document.all." + objId);
			else return eval("document." + objId);}