Each time you press the Submit button, the value in the _sum span is incremented.
每次按下Submit按钮时，_sum 范围值递增。
Enter this code in the space provided at the above web site, and press the SUBMIT button.
输入此，在上述网站提供的空间代码，然后按提交按钮。
Under these conditions, nothing will happen when you press the Submit button, since your binding is enforcing the fact that the data currently is not valid.
在这种情况下，按Submit按钮时什么事情也不会发生，因为绑定使当前数据成为无效的。
For those of you who do any shopping online, this is precisely why you see warnings not to press the order submit button more than once or else you'll end up with multiple charges on your credit card.
对于那些在线购物的人来说，这恰恰是为什么会看到这样的警告：不要多次按提交按钮，否则您的信用卡上将会多次计费的原因。
For those of you who do any shopping online, this is precisely why you see warnings not to press the order submit button more than once or else you'll end up with multiple charges on your credit card.
对于那些在线购物的人来说，这恰恰是为什么会看到这样的警告：不要多次按提交按钮，否则您的信用卡上将会多次计费的原因。
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