htmledit_views">

业务需求

最近做打印页面，输入字数过多影响打印效果，和客户商量后决定限制输入最大字数来保证避免样式修改

html代码

<td  colspan="9">
    <textarea cols="75" rows="11" style="border: none;" id="healthGuide1">${jmExaminationFeedback.healthGuide}</textarea>
    <div>您还可以输入 <span id="text-healthGuide1-count" style="color: red">0</span> /350个文字</div>
</td>

js代码

$(function(){
    $("#text-healthGuide1-count").text(350-$("#healthGuide1").val().length);
//健康指导超出350字提示
$("#healthGuide1").on("input propertychange", function() {
    var $this = $(this),
        _val = $this.val(),
        count = "";
    if (_val.length > 350) {
        $this.val(_val.substring(0, 350));
        $("#text-healthGuide1-count").text(0)
    }else{
        count =_val.length;
        $("#text-healthGuide1-count").text(350-count);
    }

});

}