原生JS实现Textarea汉字字数判断

Question

<tr>
                    <td>自我评价：</td>
                    <td><textarea rows="10" cols="40" name="desc"></textarea></td>
                </tr>

        var ChuiNiuBi = document.getElementsByName("desc");
        if (ChuiNiuBi.value.length>2000||ChuiNiuBi.value.length<100||ChuiNiuBi.value==="") {
            alert("自我评价不能为空，大于50个字，小于1000个字。");
            return false;
        }
        return false

求大神指教

Answer 1

function Judge(){
var ChuiNiuBi = document.getElementsByName("desc");
var count = 0;
for(var i =0;i <= ChuiNiuBi.value.length;i++){
if(/.*[\u4e00-\u9fa5]+.*/.test(ChuiNiuBi.value[i])){
count+=1
}
}
if( count < 50){
console.log("汉字小于50")
}else if( 1000<count ){
console.log("汉字大于1000")
}else{
console.log("发布通过")
}
}