在同一行同时检查两个复选框

Question

I know this question have already been answered in this link but what if i only want to check the checkbox beside the other checkbox.

just is like this

+-------------------------------+
|column1    | column2 |column3  |
+-------------------------------+
|check here |   ✓     |  ✓     |
+-------------------------------+
|butnothere |    □    |   □     |
+-------------------------------+

I've tried this function

$('#chk1, #chk2').on('click', function(){
    var checked = $(this).is(':checked');
    $('#chk1, #chk2').attr('checked', checked);
});

but it checks all of my checkboxes like this.

+-------------------------------+
|column1    | column2 |column3  |
+-------------------------------+
|check here |   ✓     |   ✓    |
+-------------------------------+
|butnothere |   ✓     |   ✓    |
+-------------------------------+

here is my html table(short copy).

<tr>
    <td width="20">
        <input id="chk1" type="checkbox">
        <input id="chk2" type="checkbox">
    </td>
</tr>

just like the one from above.

Answer 1

You can use SharedPreferences

Below are the examples to set and get the value from shared preferences.

1. Set the Value

   SharedPreferences.Editor editor = getSharedPreferences("Use your prefered name", MODE_PRIVATE).edit(); editor.putInt("val", 1); editor.apply();

2. Get the Value

To use shared preference in non-activity class, follow below steps

1. Create static variable for context in your main activity.

   public static Context appContext;

2. In onCreate method initialize the context

   public void onCreate() { appContext= getApplicationContext(); }

3. Create getter method in same class.

   public static Context getAppContext(){ return appContext; }

4. In your java class, you need to call below context method.

   Context applicationContext = MyActivity.getAppContext();

5. Use PreferenceManager Class to get the SharedPreferences .

   SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(applicationContext); int val = prefs.getInt("val", 0); // where 0 is the default value.