效果圖:
實現代碼:
<div> <textarea id="textArea" rows="4" cols="20" onkeydown="limitWord()" onkeyup="limitWord()"> </textarea> <span id="tip">已輸入</span> </div> <script language="javascript"> var maxl=140;//總長 function limitWord(){ var s=document.getElementById("textArea").value.length; if(s>maxl)document.getElementById("textArea").value=document.getElementById("textArea").value.substr(0,maxl-1); else document.getElementById("tip").innerHTML="已輸入:"+s+"/"+maxl; } </script>