How to include variables in javascripts strings

I have the script as as follows: I want to inclde th index va开发者_如何学JAVAlue as shown below. How can I do that? With my actual code,I am having error

for(var index = 1; index < 6; index++){

   $("#myTable thead td:nth-child(index + 2).html("here");

}

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You could do:

for(var index = 1; index < 6; index++){
   var nthchild = index+2;
   $("#myTable thead td:nth-child("+nthchild+")").html(index);
}

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You have to write:

for(var index = 1; index < 6; index++) {
    $("#myTable thead td:nth-child("+(index+2)+")").html("here");
}

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Concatenate string, and sorted your syntax error:

  for(var index = 1; index < 6; index++)
  {    
      $("#myTable thead td:nth-child(" + (index+2) + ")").html('here');
  }