What is the method for adding the square root symbol to a button's value?

I am attempting to display the square root symbol inside a button, but I am having trouble making it work. Below is my button code:

<input type="button" id="sqrt" value="sqrt" onclick="insert function here">

For the value, I want the square root symbol to appear and I am struggling to find a solution.

csshtmlbuttonsqrt

Answer №1

Looking for a specific symbol? Check out W3's Character Entity Reference Chart to find what you need.

If you want to display the Square Root (√) symbol, here are some options:

&radic;
&Sqrt;
&#x0221A;
&#8730;

For instance:

<input type="button" value="&radic;" />       <!-- or... -->
<input type="button" value="&Sqrt;" />        <!-- or... -->
<input type="button" value="&#x0221A;" />     <!-- or... -->
<input type="button" value="&#8730;" />

In my opinion, using either &#x0221A; or &#8730; is preferable as they directly reference the symbol's Unicode ID. Browsers may not always support &radic; or &Sqrt;.

Check out this JSFiddle demo.

Answer №2

Try using the symbol &radic;:

<input class="sqrt-input" type="submit" value="&radic;" />

If you're not a fan of the default appearance, adjust the font:

/* Verdana is a good choice as it is widely supported
across different browsers. */
.sqrt-input {
    font-family: Verdana; 
}

Answer №3

A convenient option is to directly incorporate the character:

<input type="button" id="sqrt" value="√" onclick="...">

It's important to ensure that utf-8 character encoding is being used and specified in HTTP headers, although this should be standard practice regardless.

Answer №4

To incorporate an image within a button, you can use the following code:

<button TYPE="submit" >
<img src="" >
</button>

Simply enter the file path of your desired image in the src attribute. Additionally, you have the option to specify the height and width properties to adjust the size of your button, as well as attributes like align="absmiddle" to center the image within the button.

For instance:

<button TYPE="submit" >
<img style="height:25px;width:65px;" src="http://2.bp.blogspot.com/_0agwm6I7YZE/TO_DccbrDBI/AAAAAAAAMEU/0OADo56Xqxw/s1600/square-root.jpg" align="absmiddle" >
</button>

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