问题
I want to use the html5 element <input type="number"> on my website, but i want to know what happens to this field in browsers that do not support this feature? Is it than a classic <input type="text"> field for those browsers?
回答1:
When a browser does not recognize a particular type value for an <input>, it reverts to it's default value, which is text. So, all of the following are equivalent on browsers that do not support type="number":
<input type="number">
<input type="somevaluethatdoesntexist">
<input type="text">
<input>
For browsers that do support type="number", the number <input> will be displayed instead of the text <input>.
Read more about the type attribute in the HTML Specification.
回答2:
Refer to
- W3 - Input Types
- W3 - Input Type Number
- W3Schools - HTML 5 Input Types
Open this Example on IE and Chrome and see the difference.
Supported Browsers:
- Opera
- Safari
- Chrome
If HTML 5 Input Types are not supported on a browser, they will behave as regular text fields.
回答3:
Caution, while older browsers ignore and default to "text", many newer browsers simply do the wrong thing. See: What models of Samsung smartphones have missing period for html5 input type="number"?
来源：https://stackoverflow.com/questions/10521445/html5-input-number-and-incompatible-browsers