问题描述
带破折号的地区代码
$ b$ b
< a href =tel:555-555-1212> 555-555-1212< / a>
不带破折号的区号
<$ p $ < code>< a href =tel:5555551212> 555-555-1212< / a>
带破折号和1的区号
< a href =tel:1-555-555-1212> 555-555-1212< / a>
不带破折号的区号和1
< a href =tel:15555551212> 555-555-1212< / a>
带破折号,1和+符号的地区代码
< a href =tel:+ 1-555-555-1212> 555-555-1212< / a>
不带破折号的区号,1和+号
< a href =tel:+15555551212> 555-555-1212< / a>
最后两个都可以工作。除了让数字更具可读性之外,虚线没有任何意义,所以你不妨包括它们。然而, +
标志是必要的,以便号码可以从国外拨出(即在你的例子中在美国/加拿大以外)。
What is the proper, universal format for creating a clickable hyperlink for users on mobile devices to call a phone number?
Area code with dashes
<a href="tel:555-555-1212">555-555-1212</a>
Area code with no dashes
<a href="tel:5555551212">555-555-1212</a>
Area code with dashes and 1
<a href="tel:1-555-555-1212">555-555-1212</a>
Area code with no dashes and 1
<a href="tel:15555551212">555-555-1212</a>
Area code with dashes, 1 and + sign
<a href="tel:+1-555-555-1212">555-555-1212</a>
Area code with no dashes, 1 and + sign
<a href="tel:+15555551212">555-555-1212</a>
Either of the last two would work. Dashes have no significance other than making the number more readable, so you might as well include them. However the +
sign is necessary so that the number can be dialed from outside the country (i.e. outside USA/Canada in your example).
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