js restricts input to numbers, letters, Chinese characters, etc._javascript skills

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1. Only numeric codes can be entered in the text box (decimal points cannot be entered either)

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2. Only You can enter numbers and decimal points.

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3. Numbers And decimal point method two

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4. Only letters and Chinese characters can be entered

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5. Only English letters and numbers can be entered, but Chinese cannot be entered

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6. Only numbers and English can be entered

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7. Only after the decimal point There can be up to two digits (numbers and Chinese can be entered), letters and arithmetic symbols cannot be entered:

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57) &&event.keyCode!=46 ||/.dd$/.test(value))event .returnValue=false">

8. 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:

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