问题
I have
<button name="foo" value="bar" onclick="submit()" >foobar</button>
When I click the button in firefox, the value is transferred (is foo) and I can read the value like the following:
dim mode : mode = lcase(request("foo"))
But the value is empty when I perform the same action in Chrome.
Could anyone help?
回答1:
Different browsers have different default submit behaviors for buttons. If you want a button to submit the form (and thus post its name and value pair), you'll have to use:
<button type="submit" name="foo" value="bar" >foobar</button>
The type attribute for button can be submit, button, or reset and unless this is explicitly specified, will vary from browser to browser.
回答2:
You have a quote missing. It should look like this:
<button name="foo" value="bar" onclick="submit()" >foobar</button>
In addition, submit() is a method on a form, so you must make sure your button is within <form></form> tags.
From the W3C specification:
Important: If you use the element in an HTML form, different browsers may submit different values. Internet Explorer, prior version 9, will submit the text between the
<button>and</button>tags, while other browsers will submit the content of the value attribute. Use the<input>element to create buttons in an HTML form.
回答3:
You need to quote your attributes:
<button name="foo" value="bar" onclick="submit()" >foobar</button>
Also "submit" is a reserved word in JavaScript. If you have a function called "submit" it may not work.
List of reserved words: http://www.javascripter.net/faq/reserved.htm
回答4:
If you will it makes easier for google or other to find your form. Give the button an title and alt:
<button name="foo" title="submit" alt="submit for contact" valeu="" onclick="submit()" >foobar</button>
回答5:
From what I remember, old versions of IE (maybe even 8) treat only the good old <input type="submit" /> as "real" submit button that is part of the form thus sending its value. So <button> in such browsers won't send its value.
Change the HTML to this and it should work for all browsers:
<input type="submit" name="foo" value="foobar" onclick="this.value = 'bar';" />
As the value sent is the value seen, I had to use JavaScript trick to change the value upon click - as far as I know, can't do that without using client side script.
来源：https://stackoverflow.com/questions/9314706/button-doesnt-work-in-chrome