onblur | 易学教程

jQuery $(window).blur vs native window.onblur

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问题 What are the advantages of using jQuery's $(window).blur(function() { ... }) to attach an event handler versus setting it directly with window.onblur = function() { ... } It seems that the latter is less robust because it only supports one blur handler, and when used with other packages, other code might override the window.blur value with another function. However, couldn't this also happen with the jQuery implementation too, which presumably uses window.blur as its underlying implementation

textarea onclick remove text

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问题 I know how to remove text in a simple html textbox but html textareas seem much more complicated. instead of the value attribute you put the text right between: <html> <textarea> </textarea>. </html> This is why im having trouble making an onFocus and onBlur event. 回答1: <textarea name="message" onfocus="if(this.value==this.defaultValue)this.value='';" onblur="if(this.value=='')this.value=this.defaultValue;"> Put anything for default value here </textarea> Live example: http://jsfiddle.net

jQuery validation onblur

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问题 I am trying to get the jQuery validation working on a webpage I am creating. I have about 6 different fieldsets that contain the page's details. I am using this as I am hiding and showing them give a better user experience. I have the plugin working as I want whenever I try submit the page and whenever I add a single character (when a textbox requires 2 or more characters) however I also want the validation to happen onblur. I want to inform my users straight away if they haven't met the

jQuery remove spaces on blur not working

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问题 The replace function I'm using works as I've tested it in the console but it does not work at all on blur. How can I fix that? <script type="text/javascript"> //Ensure spaces are not entered between tags jQuery(document).ready(function(){ jQuery('#item_keywords').blur(function(){ $(this).val().replace(/^\s+$/,""); }); }); </script> 回答1: you have removed the spaces but u have not assigned them any where :) jQuery(document).ready(function(){ jQuery('#item_keywords').unbind('blur').bind('blur'

Function called at the start of page loading - javascript

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问题 I have a problem; for some reason, my function is being called at the start of the webapplication while the page is loading. My code is as follows function validateName(element) { var len = element.value.length; //checks if the code is than 6 characters if (len == 0) { element.style.backgroundColor="red"; if (element.id == "firstname") { document.getElementById('firstNameError').style.display = "block"; } else if (element.id == "lastname") { document.getElementById('lastNameError').style

How to call function when I press tab key in javascript?

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问题 I have a function like that : function whenEmpty(field) { if (field.value == '') { field.style.backgroundColor = "#ffcccc"; alert("Please fill the field."); field.focus(); } else { field.style.backgroundColor = "#ffff80"; } } Before I thought about that idea (I want to call this function when tab key is pressed. ) I call the function on attribute onblur. <tr> <td> <div class="required"> <label>Phone</label> </div> </td> <td> <form:input path="connote.destPhone" id="destPhone" htmlEscape="true

Does HTML 'body' tag have an onblur event?

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问题 I tried to bind the onblur event to a <body> tag and it works in IE 6/8. However, when I turn to w3schools, it turns out that the <body> tag doesn't have an onblur event. Can anyone explain this? 回答1: The HTML4 specification does not list the onblur attribute. The HTML5 draft on the other hand does. 回答2: body:onblur is part of the HTML5 spec, but not part of the HTML4 spec. If you want to support HTML4 browsers, why not use window:onblur ? For most cases, you'll have the same functionality.

jQuery: fire click() before blur() event

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问题 I have an input field, where I try to make autocomplete suggestion. Code looks like <input type="text" id="myinput"> <div id="myresults"></div> On input's blur() event I want to hide results' div: $("#myinput").live('blur',function(){ $("#myresults").hide(); }); When I write something into my input I send request to server and get json response, parse it into ul->li structure and put this ul to my #myresults div. When I click to this parsed li element I want to set value from li to input and

How to use on blur event using c#?

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问题 I want to use On Blur event in my project. but it doesn't work. this is my code: code c#: protected void xx() { TextBox2.Text = "zzzzzzzzzzzzzzzzzzz"; } code design: <asp:TextBox ID="TextBox1" runat="server" onblur="xx"></asp:TextBox> <asp:TextBox ID="TextBox2" runat="server" ></asp:TextBox> what is wrong? by the way, I use visual studio 2010. 回答1: **aspx code:** <asp:TextBox ID="TextBox1" runat="server" onblur="validate();"></asp:TextBox> <asp:TextBox ID="TextBox2" runat="server" ></asp

Firefox weird onblur behavior (3.6.12)

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问题 Check the test page here http://rickchristie.com/testfocus.html Correct me if I'm wrong: onfocus happens when the element gains focus. onblur happens when the element loses the focus. In Firefox 3.6.12 (tested on mac and windows), using onblur without onfocus works fine. However when an input element has both onfocus and onblur element, it gets weird: When you click at the input, onblur is fired instead of onfocus . Right after onblur , onfocus fires immediately. You can't type anything in