placeholder的积累，看下情况

placeholder.html

<script>
// Placeholder
$('input[aria-label]').each(function() {
    var current = $(this);
    var flag = !!current.attr('aria-label');
    if(flag) {
        $('<span class="placeholder">'+current.attr('aria-label')+'</span>').appendTo(current.parent())
    };

    current.on("focus", function() {
        current.siblings(".placeholder").hide();
    });

    current.siblings(".placeholder").on('click', function() {
        if(flag) {
            $(this).hide();
            current.focus();
        }
    });

    current.on('blur', function() {
        if(current.val() == '' || current.val() == current.attr('aria-label')) {
            current.siblings('.placeholder').show();
        }
    });
});
</script>

<div class="input_wrap clearfix">
    <label class="input_label"><i class="required">*</i>所属营业部：</label>
    <div class="input_control">
        <input type="text" name="" id="" class="input_txt" value="" aria-label="你所在营业部全称">
        <span class="placeholer">这个占位符文本就是jquery生成的,通过读取aria-label来操作</span>
    </div>
</div>