jQuery如果div包含文本，切换按钮

Question

I'm trying to get a button to be toggled if a div contains a string of text. Something like:

$(document).ready(function(){
$(function() {
if ('$div#trackingnumber:contains('Hello')');') {
    $("dinput#submitam").toggle()});
}
});

Does anybody know how to do this?

Answer 1

You are on the right way. I only see some syntax errors. Try this

$(document).ready(function(){
     if ($("#trackingnumber:contains('Hello')").length != 0) 
     {
         $("dinput#submitam").toggle();
     }
});

Checkout this jsFiddle too.

Answer 2

Just do like this

$(document).ready(function(){
  if ($("div#trackingnumber:contains('Hello')").length > 0)
  $("dinput#submitam").toggle();
});

Answer 3

$(document).ready(function() {
    if ( $("#trackingnumber:contains('Hello')").length > 0 ) {
        $("#submitam").toggle();
    }
});