find and select non-english character in text

Question

我的页面中有一些段落文本用英语和非英语单词组成，我需要用Javascript或jquery查找英语单词，然后在这些单词之前和之后插入。

Answer 1

If you mean non-English character (not word), you can use regular expressions:

if (str.match(/^[a-zA-Z1-9.?!:;\- ]+$/g) === null) 
{
    //str contains non-English character(s) 
    // (You can add more characters to the block if you want to allow more. I may have missed something.)
}

If you mean non-English words, it's a bit more difficult, because then you are required to use some sort of resource (dictionary-like) to match each word. This is much more complicated.