checkbox

问题 I am trying to use an Angular Material checkbox, and set it by default as checked, but it is displayed as non-checked, what is wrong? <mat-checkbox class = "example-margin" [(ngModel)] = obj.impresora> <label>Printer</label> </mat-checkbox> obj.impresora property is boolean 回答1: You can either set with ngModel either with [checked] attribute. ngModel binded property should be set to 'true': 1. <mat-checkbox class = "example-margin" [(ngModel)] = "myModel"> <label>Printer </label> </mat

问题 I'm trying to build something like wordpress options for toggling fields visibility when creating and article. What I've build is relying on the $.click function that is toggling the parent with the corresponding field name and I was wondering what would be the best way of doing this with if the check box is checked because my code will mess up if you check a box and reload the page because its a click and not if the box is actually checked. Thanks in advance! http://jsfiddle.net/zgrRd/1/

问题 I am using the laravel register function to register a user. I added a checkbox where the user needs to accept the terms and conditions. I only want to user to register when the checkbox is checked. Can I use the 'required' validation in laravel? This is my validation function: return Validator::make($data, [ 'firstName' => 'required|max:255', 'lastName' => 'required|max:255', 'email' => 'required|email|max:255|unique:users', 'password' => 'required|confirmed|min:6', 'checkbox' =>'required',

问题 I need help in using checkbox cell. I currently added the object to tableview. It looks ok until i tried building and running the program where I cannot check the checkbox. I am currently using a tableview which displays items runtime with a checkbox for each item so i can have multiple selections. I am new to xcode and I have been stuck for a week with this problem. i tried google but still no luck. Any snippets, answers, or explanations is very much appreciated. 回答1: First we need to edit

问题 I have looked at the different questions regarding this issue, but couldn't find anything that works due to limitations in my markup. My markup looks like so (unfortunately as this is generated by some backend, I am unable to change the markup). <ul> <li> <input type="checkbox" value="1" name="test[]" id="myid1"> <label for="myid1">label1</label> </li> <li> <input type="checkbox" value="2" name="test[]" id="myid2"> <label for="myid2">label1</label> </li> </ul> I need the checkbox to be on the

问题 I have a form there are 4 options (they may be check boxes or radio). I want to select multiple options but one is compulsory. I know it is possible in JS/jQuery but I want a HTML/CSS base solution. 回答1: To be able to check multiple inputs, they must be checkboxes. (They could be radio buttons with different names, but you wouldn't be able to uncheck them once checked.) So use checkboxes, and show the Submit button only if any are checked, using the general sibling selector (~): input[type=

问题 I'm using MVC 4, .Net 4, and Visual Studio 2012. I'm trying to use a fairly complex model with one of my views, and I'm having serious trouble getting it to bind properly. The model wraps a Dictionary with integer Keys, and Values that are Lists of Lists of bools. Basically, a search was done on items indicated by the integer, each item had several search terms, and for each of those terms we have a list of results. I display the results on a page, and have a checkbox next to each result. For

问题 I'm beginner in Java Android developing. I'm using Eclipse SDK 3.6.1 version. I have a preferences window with two checkbox and one back button. <?xml version="1.0" encoding="utf-8"?> <PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android"> <PreferenceCategory android:title="PIN requirement"> <CheckBoxPreference android:title="Use PIN" android:defaultValue="true" android:key="checkboxPref" /> <CheckBoxPreference android:title="Don't use PIN" android:defaultValue="false"

问题 Am looping products out from product table to add them to cart table. only the selected product by checking the checkbox should be added, but if you select, the selected ones do not correspond.. HERE IS THE HTML GETTING THE PRODUCTS OUT <html> <form action="#" id="" class="horizontal-form" method="post"> <?php $LISTP = "SELECT * FROM products ORDER BY id"; $sn = 0; $stmt = $pdo->prepare($LISTP); $stmt->execute(); while($list = $stmt->fetch(PDO::FETCH_ASSOC)){ $sn = $sn + 1; $ID = $list['id'];

问题 i am a newbie in php programming and i cant figure out where i have gone wrong as my php code wont execute. As the title says i am trying to create check boxes in my site however the values will come from the mysql database. I have a table named “campus” in MySQL database and it has 2 coloumns called id and room. database [![Database][1]][1] http://i.imgur.com/uLP6niJ.png current output [![Current Output][2]][2] http://i.imgur.com/cSOYPme.png below is my code: <?PHP $hostname = "localhost";