How to solve the problem of garbled Chinese characters in javascript intercepted strings

Solution to javascript intercepting Chinese garbled strings: 1. Open the corresponding js code file; 2. Use the "function subString(str, len, hasDot){...}" method to intercept Chinese and English strings That’s it.

The operating environment of this article: windows7 system, javascript version 1.8.5, Dell G3 computer.

How to solve the problem of garbled Chinese characters in javascript intercepted strings?

js intercepts Chinese and English strings without garbled characters

The code is as follows:

function subString(str, len, hasDot)  //js截取中英文字符串无乱码
        {
            var newLength = 0;
            var newStr = "";
            var chineseRegex = /[^\x00-\xff]/g;
            var singleChar = "";
            var strLength = str.replace(chineseRegex,"**").length;
            for(var i = 0;i < strLength;i++){
                singleChar = str.charAt(i).toString();
                if(singleChar.match(chineseRegex) != null){
                    newLength += 2;
                }else{
                    newLength++;
                }
                if(newLength > len){
                    break;
                }
                newStr += singleChar;
            }
             
            if(hasDot && strLength > len){
                newStr += "...";
            }
            return newStr;
        }
         
        //var subdescription = subString("js截取中英文字符串无乱码",10,true)
        //document.write(subdescription);<!--用document.write()输出<li>title</li>-->

[Recommended learning: javascript basic tutorial]

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