Inupt textarea prompt text (click to disappear without entering restoration) and limit words

Effect:

Input:

Textarea:Up to 100 characters

Source code:

 Input:  <  Input  Name  = "Textfield"  Type  = "Text" Maxlength  = "20"  Value  = "Enter Text .."  Onfocus  = "If (value = 'enter the text...') {value = ''}"  Onblur  = "If (value ='') {value = 'enter the text ..'}"   />  <  BR  > <  BR  >  Textarea:  < Textarea  Cols  = "50"  Rows  = "5"  ID  = "Textarea"  Onkeydown  = "Textdown (event )"  Onkeyup  = "Textup ()"  Onfocus  = "If (value = 'limited to 100 words') {value = ''}"  Onblur  = "If (value ='') {value = 'only 100 words '}"  > Up to 100 characters </  Textarea  >  <  Script  Type  = "Text/JavaScript"  >      Function  Textdown (e) {textevent  =  E;  If (Textevent. keycode  =   8  ){  Return  ;}  If  (Document. getelementbyid (  '  Textarea  ' ). Value. Length  > =   100  ) {Alert (  "  Hero, show your mercy. The words are limited to 100 characters.  "  )  If  (  ! Document. All) {textevent. preventdefault ();}  Else  {Textevent. returnvalue  =   False  ;}}}  Function  Textup (){  VaR  S =  Document. getelementbyid (  '  Textarea  '  ). Value;  //  Determines whether the number of words in the text area with the ID of text exceeds 100.      If  (S. Length  >  100  ) {Document. getelementbyid (  '  Textarea  '  ). Value  =  S. substring (  0  ,  100 );}}  </  Script  >