function fenGeString(str,num) { //每num位就添加一个逗号
//先将str转换为数组
var strToArr =str.split('');
for (var i =num ;i<str.length;i+=num+1){
strToArr.splice(i,0,',');
}
return strToArr.join('');
}
var str = 'abdhiedhjofe';
console.log(fenGeString(str,3));//abd,hie,dhj,ofe
js实现算法--割字符串
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转载自blog.csdn.net/weixin_38959210/article/details/106333827
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