var str = "中国（银行）银行第四代覅覅结果肺感染";
re = /[\u4E00-\u9FA5]/g;
if(str.match(re).length > 6){
var strall = str.match(re); //数组
var str6 = str.match(re).slice(5,6).join(""); //第6个字符
var arrIndex = [];
for(var i = 0;i<str.length;i++){
if(str[i] === str6){
arrIndex.push(i)
}
};
for(var i = 0;i<arrIndex.length;i++ ){
if(strall.slice(0,arrIndex[i]).length >= 6){
console.log(str.slice(0,arrIndex[i]+1),"目标");
var targetStr = str.slice(0,arrIndex[i]+1);
break;
}
}
};
正则匹配中文
原文：https://www.cnblogs.com/swt-axios/p/12788753.html
