javascript: create DOM element without using for loop

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when need to created a dom element repeatedly , use string concatenation to avoid for loop you can use repeat function from below.

Copy this code and paste it in your HTML
  1. function repeat(str,n)
  2. {
  3. return new Array(n+1).join(str);
  4. }
  6. repeat("<li class='empty'>" , 2);
  9. //output: "<li class='empty'><li class='empty'>"

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