JS to determine the number of words in Chinese limit bytes

JS Limit text bytes would have been easier to implement, the only noteworthy is the Chinese character of the judge, because the English language is not the same as the byte, English only accounted for 1 bytes, while the Chinese need 2, the following JavaScript function is usually written when the project, after a number of amendments, it should be more accurate, I'll tell you how to use it later. First comes the main function code:

Checkbyte.js Code:

Here is an example, please introduce checkbyte.js before using

Value: Values

ByteLength: Database byte length

Title: Field Chinese name

Attribute: Property Name

Instructions for use:

1, onkeyup= "Limitlength (this.value,100, ' name ', ' title ')"

2, id= "name" or "Struts Tag" styleid= "name"

Here you should note that the ID and attribute property names are the same