placeholder

问题 What is the difference between <asp:Panel > and <asp:PlaceHolder > in ASP.NET? When should you use one over the other? 回答1: A panel expands to a span (or a div), with it's content within it. A placeholder is just that, a placeholder that's replaced by whatever you put in it. 回答2: The Placeholder does not render any tags for itself, so it is great for grouping content without the overhead of outer HTML tags. The Panel does have outer HTML tags but does have some cool extra properties.

问题 Is it possible to use Font Awesome Icon in a Placeholder? I read where HTML isn't allowed in a placeholder. Is there a workaround? placeholder="<i class='icon-search'></i>" 回答1: You can't add an icon and text because you can't apply a different font to part of a placeholder, however, if you are satisfied with just an icon then it can work. The FontAwesome icons are just characters with a custom font (you can look at the FontAwesome.css for the escaped Unicode character in the content rule. In

问题 I have a drop down containing: father, mother and guardian. Followed by an input text-box with no placeholder on it. I wanted the placeholder of the text-box to update dynamically according to the value selected I tried using assigning a string to placeholder property in the ts file section. but it could only choose that particular value. i wanted it to choose with an *ngIf this is the select drop-down <mat-select placeholder="Relation to Student"formControlName="relationType"> <mat-option

问题 I need to show dots (● ) as the placeholder of the text input. But they are not rendering just showing the unicode in the placeholder. Please help me out <input type="text" ng-model="inputText" placeholder="{{somePlaceholder}}" /> In the controller: $scope.somePlaceholder = '●●'; Fiddle - http://jsfiddle.net/Lvc0u55v/8334/ 回答1: That's javaScript, you have to use \u escapes for Unicode characters. $scope.somePlaceholder = '\u25cf\u25cf'; Or just write those dots literally (assuming the

问题 I'm using struts2 tags and want to put a placeholder in a <s:textfield> tag like this: <s:set name="email" value="getText('email')" /> ... <s:form action="Login"> <s:textfield key="email" theme="simple" placeholder="%{email}" cssClass="span3"/> ... </s:form> email is defined in global.properties as "Correo electrónico" . My problem is that when I see the jsp page, instead of seeing the value of email I see %{email} . I read that it was a bug of Struts2 solved in version 2.3.1 here: https:/

问题 Has anyone successfully added jQuery placeholder text for IE8 to dynamically created form elements. For example, I click a button and a form appears that is loaded through AJAX, I need to hit the new form with placeholder text. I have tried using jQuery .live, .bind, .on etc... but neither are catching the new elements when they are created. I've also tried placing it in a click function so that when they click the button the placeholder function is activated. $('input[placeholder]').on(

问题 I belive anybody knows this Placeholder-Behaviour for Search-Textboxes. When the page is loaded there is a string in it like "search here..." and as soon the user klicks into the TextBox the string diappears and it appears again if the user didn't insert somethink as soon as the user klick out this textbox. At the moment I use the JQuery Placeholder-Plugin to realize that in my ASP.Net-Page. I heave a questions, maybe the Plugin doesn't support what I want, maybe it does, don't know: I will

问题 I've created my own email class in WooCommerce. Because I need a custom parameter in my email content, I've added a placeholder with this custom parameter to the wc email trigger function: public function trigger( $order_id, $firstname, $lastname, $order = false ) { $this->setup_locale(); if ( $order_id && ! is_a( $order, 'WC_Order' ) ) { $order = wc_get_order( $order_id ); } if ( is_a( $order, 'WC_Order' ) ) { $this->object = $order; $this->recipient = $this->object->get_billing_email();

问题 This is very likely a bug, but I'm reporting it here for reference and for the slight chance of someone being able to propose a workaround. IE 11 supports the placeholder attribute natively on textarea elements. That's great. But adding a new textarea with a placeholder to the DOM, it automatically puts the placeholder text into the textarea's field, too! Here's the repro: http://jsfiddle.net/wE577/1/ 回答1: Fiddling around on jsfiddle, it turns out that from jQuery 1.9 onwards, this problem

问题 Hi I have created a form on my website. I am using placeholder="Full Name" but nothing is showing up in the form when viewed in IE8 (and probably other IE versions) I have tried using value="" onfocus="if (this.value == 'Full Name') {this.value = '';}" onblur="if (this.value == '') {this.value = 'Full Name';}" but the form is still empty. For some reason 'Full Name' shows up when you click on the form, then off it. The website I am working on is [usspcatalystcentre.org.uk][1] and you can see