Cannot read property 'style' of undefined — Uncaught Type Error

Question

I would like to change the color, fontsize and font weight of the text in a span element of the html page.

I am using the following code:

if(window.locat         


        

Answer 1

It's currently working, I've just changed the operator > in order to work in the snippet, take a look:

window.onload = function() {

  if (window.location.href.indexOf("test") <= -1) {
    var search_span = document.getElementsByClassName("securitySearchQuery");
    search_span[0].style.color = "blue";
    search_span[0].style.fontWeight = "bold";
    search_span[0].style.fontSize = "40px";

  }

}

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