jQuery .focus(在字段X上)导致.blur(在字段X上)被调用

@H_696_4@ 有谁知道为什么jQuery .focus函数会导致onblur事件被调用.我问的原因是因为在我的 JavaScript自定义psuedo类中,我称之为.

jQuery(thistemp.Elements.TxtSamplEID).blur(Function.createDelegate(thistemp,thistemp.preAccessioningLoad));

但是对于我的WCF服务的AJAX调用,成功的JavaScript函数(在同一个类中),我有这个代码. * .focus行导致上面我的委托的另一个实例被调用.我可以通过评论来证明这一点.使用该行,我的警报会被调用两次.没有它,我的警报只会被调用一次.

PreAccessioningLoadsuccess: function(quickDataEntryObject) {

    var val = jQuery(this.Elements.TxtSamplEID).val().replace(/^\s\s*/,"").replace(/\s\s*$/,"");
    var intRegex = /^\d{1,10}$/;
    if (!intRegex.test(val)) {
        jQuery(this.Elements.SamplEIDAjaxValidatE).html("<span style='color:red'>Sample Id must contain between 1 and 10 digits</span>");
        jQuery(this.Elements.TxtSamplEID).focus();
        jQuery(this.Elements.ImageAjaxSpinner).css("visibility","hidden");
        alert("this alert gets called twice when .focus() function called ???");
        return false;
    }
    else {
        jQuery(this.Elements.SamplEIDAjaxValidatE).html("");  // clear AJAX validation
    }

…

为什么会这样？

============
这是我的请求的委托事件：

PreAccessioningLoad: function(sender) {

    if (this.Elements.TxtSamplEID.value != "") {

        var service = new Acu.LIMS.UI.Web.WCFservices.Accessioning.QuickDataEntryservice();
        jQuery(this.Elements.ImageAjaxSpinner).css("visibility","visible");
        service.PreAccessioningLoad(this.Elements.TxtSamplEID.value,Function.createDelegate(this,this.PreAccessioningLoadsuccess),this.PreAccessioningLoadError));
    }
    return false;  //prevent page postBACk
},

=========================================
添加我的源代码：

< asp：TextBox id =“TxtSamplEID”runat =“server”class =“LIMSInputField”onfocus =“Change(this,event)”onblur =“Change(this,event)”/>

<script type="text/javascript">

    function Change(obj,evt) {
        if (evt.type == "focus") {
            obj.style.borderColor = "black";
            obj.style.BACkgroundColor = "#90EE90";  // light green on focus
        }
        else if (evt.type == "blur") {
            obj.style.borderColor = "white";
            obj.style.BACkgroundColor = "#7AC5CD";  // light blue on blur
        }
    }

</script>

alert("this alert gets called twice when .focus() function called ???");