Question

每次刷新字符串中的页面时，我都想要随机多个下划线...

<html>
  <body>
   <p id="demo"></p>
   <p id="temo"></p>
   <p id="jemo"></p>
   <p id="remo"></p>
   <script>
     var i;
     var x="Sachin Tendulkar";//String in which i want underscores
     var res=x.split("");
     for(i=1;i<=7;i++)//here in this for loop i generated random numbers and accessing the elements at that indexes and try to put underscores there.
     {
       var j = document.getElementById("demo").innerHTML=Math.floor(Math.random()*         ((x.length-1)/2));
       var t = res[j];
       var f = document.getElementById("jemo").innerHTML=x.replace(res[j],"_");
       var l = document.getElementById("jemo").innerHTML=f.replace(res[j],"_");

     }
   </script>
  </body>
</html>

Answer 1

您可以使用.slice()，.concat()代替.replace()。

var x = "Sachin Tendulkar";
for (var i = 1, y = x; i < 7; i++) {
  // alternatively `Math.floor(Math.random() * x.length)`
  var n = Math.floor(Math.random() * ((x.length - 1) / 2));
  y = y.slice(0, n).concat("_", y.slice(n + 1))
}

console.log(y);

字符串中随机出现多个下划线

1 个答案: