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Use js regular to control the input tag to only allow input values _javascript skills

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Release： 2016-05-16 17:27:58

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This sentence is more practical. It means to close the input method. This will save some people from crying to you when they input numbers with full-width settings, but they can’t input them, blaming your poor design.

Only numbers are allowed

Copy code The code is as follows:

 
< input name="username" type="text" onkeyup="value=this.value.replace(//D /g,'')"> 

Only English letters and numbers are allowed to be entered and underline (implemented by the following two methods)

Copy code The code is as follows:

Only English letters, numbers and &=@ are allowed to be entered

Copy the code The code is as follows:

Only Chinese characters are allowed

Copy code The code is as follows:

Example: Limit the input of three digits to numbers or '.' and turn off the input method in the input

Copy code The code is as follows:

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Related labels：

input tag input value

source：php.cn

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Use js regular to control the input tag to only allow input values ​​_javascript skills

Use js regular to control the input tag to only allow input values _javascript skills