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C # tutorial
To hide an element with a specified id, use a hash tag (#) in front of the id name
To hide an element with a specified id, use a hash tag (#) in front of the id name.
Hide an element with id="London":
To hide all elements with a specified tag name, use the tag name (without < and >) as the selector.
Hide all <h2> elements:
To hide all elements with a specified class name, use a period (.) in front of the class name.
Hide elements with class="city":
To show an element with a specified id, use a hash tag (#) in front of the id name.
Show an element with id="London":
To show all elements with a specified tag name, use the tag name (without < and >) as the selector.
Show all <h2> elements:
To show all elements with a specified class name, use a period (.) in front of the class name.
Show elements with class="city":
w3.toggleShow(selector)
Toggle between hiding and showing an element with id="London":
<button onclick="w3.toggleShow('#London')">Toggle Hide/Show</button>
Toggle between hiding and showing all <h2> elements:
<button onclick="w3.toggleShow('h2')">Toggle Hide/Show</button>
Toggle between hiding and showing elements with class="city":
<button onclick="w3.toggleShow('.city')">Toggle Hide/Show</button>