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The following is part of the html verification code

<div class="row cl">
        <div class="formControls col-xs-8 col-xs-offset-3">
         <input class="input-text size-L" type="text" placeholder="驗證碼" onblur="if(this.value==''){this.value='驗證碼:'}" onclick="if(this.value=='驗證碼:'){this.value='';}" value="驗證碼:" style="width:150px;">
            <img id="verify_img" src="{:captcha_src()}" onclick="this.src=this.src"> <a id="kanbuq" href="javascript:refreshVerify;">看不清，換一張</a>
</div>
</div>

javacript

<!-- <script>
    // 用下面方法點擊刷新無反應
    function refreshVerify() {
        var ts = Date.parse(new Date())/1000;
        $('#verify_img').attr("src", "/captcha?id="+ts);
    }
</script> -->
<script>
    //在家里用這個方法可以實現(xiàn)點擊文字刷新，在單位電腦上依然無任何反應
    function refreshVerify() {
        var ts = Date.parse(new Date())/1000;
        var img = document.getElementById('verify_img');
        img.src = "{:captcha_src()}";
    }
</script>

May I ask why this is! ! ! ! Solve