Web Front-end
HTML Tutorial
The input input box can only enter numbers, and only alphanumeric combinations can be entered.
The input input box can only enter numbers, and only alphanumeric combinations can be entered.
Enter uppercase and lowercase letters, numbers, and underscores:
Enter lowercase letters, numbers, and underscores:
Input numbers and dots
Input Chinese:
Input number:
Input English:
Input Chinese, numbers, and English:
Input numbers and letters:
Except for English punctuation marks, other All can be Chinese, English letters, numbers, Chinese punctuation
Only numeric codes can be entered (decimal points cannot be entered)
Only numbers can be entered, decimal points can be entered.
Numbers and decimal point method two
only Can input letters and Chinese characters
Only English letters and numbers can be entered, not Chinese
Only numbers and English can be entered
There can only be up to two digits after the decimal point (numbers and Chinese can be entered), letters and arithmetic symbols cannot be entered:
There can only be up to two digits after the decimal point (numbers, letters, and Chinese can be entered), and operation symbols can be entered:
w_ ↩
a-z0-9_ ↩
d. ↩
- ##u4e00-u9fa5 ↩
- a-zA-Z ↩ ##wu4E00-u9FA5 ↩
- !@#$%^ &*()-=+ ↩
- #w./ ↩
- d|chun ↩
For more input input boxes, only numbers can be entered, and only alphanumeric combinations can be entered. For related articles, please pay attention to the PHP Chinese website!
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