jQuery select where attribute = value

I am trying to select an input where the value equals a dynamic value

trimmed = jQuery.trim(a);
preSelectedCheckBox = $(this).find("input[value=" + trimmed + "]"); 

T开发者_StackOverflowhe element exists but I constantly get no value returned. ($(preSelectedCheckBox).length = 0)

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Are you just missing the enclosing single quotes?

trimmed = jQuery.trim(a);
preSelectedCheckBox = $(this).find("input[value='" + trimmed + "']");

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preSelectedCheckBox = $(this).find("input[value=" + trimmed + "]");

forget the '' around the value