D11117129詹子宜JavaScrip執行輸入字串再反向輸出JS Code編輯Java

JavaScript輸出結果

詹子宜輸入字串:

JavaScript程式碼

<p>詹子宜輸入字串:<input id="in" len="50" type="text" /></p>
<p><input onclick="f()" type="button" value="執行JavaScript" /></p>
<p id="out"></p>
<script>
function f(){
  var a = document.getElementById("in").value;/*取得id=in的文字*/
  var b = "源自串: "+a+"<br>長度是:" + a.length + ",<br>反串是: ";
  var c = "";
  for (var i = 0; i < a.length; i++)
    c = a.slice(i,i+1) + c ;
  b = b +"<font size=7>" + c+"</font>";
  document.getElementById("out").innerHTML = b;
}
</script>