input,textarea限制字数,实时绑定

maxlength="10"

function limitImport(str,num){
    $(document).on(‘input propertychange‘,str,function(){
        var self = $(this);
        var content = self.val();
        if (content.length > num){
            self.val(content.substring(0,num));
        } 
        self.siblings(‘span‘).text(self.val().length+‘/‘+num);
    });
}

limitImport(‘.pushTe’,50);

$(document).bind(‘input propertychange‘,‘.class‘,function(){
    // console.log($(this).val().length)
    if($(this).val().length<=20){
        document.getElementById(‘tiCont‘).innerhtml = $(this).val().length;
    }
});