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JavaScript tips for judging whether a specified string is a valid number _ javascript

Source: Internet
Author: User
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Recently, I was working on a ColdFusion project with a business Check that needs to be implemented using JavaScript: To determine whether the specified string is a valid number. This kind of check has been encountered many times before, but every time it is solved, it is done, and there is no record, it will take a lot of time to write at the next touch. Things need to be accumulated. Now we have recorded it. I hope this kind of work will not be repeated too much and I will share it with you.

The Code is as follows:





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