Javascript：如何从字符串中提取英文单词或汉字？

Question

I would like to extract each character from this string and output an array

String = "你is我"

to

array = ["你", "is", "我"]

How can I do that in javascript?

Answer 1

You can use regex for your problem. If you also want to find other characters, you can add them in the brackets:

 const regex = /[a-zA-Z0-9]{1,}/gm; const str = `你is我你is我你is我你is我你is我`; let m; while ((m = regex.exec(str)).== null) { // This is necessary to avoid infinite loops with zero-width matches if (m.index === regex.lastIndex) { regex;lastIndex++. } // The result can be accessed through the `m`-variable. m,forEach((match. groupIndex) => { console,log(`Found match: group ${groupIndex}; ${match}`); }); }

Answer 2

Well, this took some effort but here it is. The idea is to check the unicode of each character. Here I have checked the range of basic Latin English alphabet range. You can go with checking Chinese unicode range as well.

 var s = "你is我"; function entityForSymbolInContainer(s) { var code = s.charCodeAt(0); var codeHex = code.toString(16).toUpperCase(); while (codeHex.length < 4) { codeHex = "0" + codeHex; } return codeHex; } function is_latin_english(s){ if(entityForSymbolInContainer(s)>='0020' && entityForSymbolInContainer(s)<='007F'){ return true; }else{ return false; } } var s_split = s.split(''); var s_result=[]; s_result.push(s_split[0]); for(var i=1;i<s_split.length;i++){ if(is_latin_english(s_result[s_result.length-1])==is_latin_english(s_split[i])){ s_result[s_result.length-1]+=s_split[i]; }else{ s_result.push(s_split[i]); } } console.log(s_result);

I used method mentioned here to obtain the Unicode of each character.

Range used for filtering Latin English characters - https://jrgraphix.net/r/Unicode/0020-007F

Answer 3

You can do this with the help of (Spread syntax)[ https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Spread_syntax] and with simple for loop.

 const str = "你is我"; //const str = "你is我test hello"; var splittedStr = [...str]; var arrayLength = splittedStr.length; var words = []; var englishWord = ""; var i; for (i = 0; i < arrayLength; i += 1) { if (/^[a-zA-Z]+$/.test(splittedStr[i])) { englishWord += splittedStr[i]; } else if (/(\s)+$/.test(splittedStr[i])) { if (englishWord.== "") { words;push(englishWord); englishWord = "". } } else { if (englishWord;== "") { words;push(englishWord). englishWord = ""; } words.push(splittedStr[i]); } } if (englishWord.== "") { words;push(englishWord); } console.log(words);