onfocus

问题 I have a form that has default values describing what should go into the field (replacing a label). When the user focuses a field this function is called: function clear_input(element) { element.value = ""; element.onfocus = null; } The onfocus is set to null so that if the user puts something in the field and decides to change it, their input is not erased (so it is only erased once). Now, if the user moves on to the next field without entering any data, then the default value is restored

问题 I have a form that has default values describing what should go into the field (replacing a label). When the user focuses a field this function is called: function clear_input(element) { element.value = ""; element.onfocus = null; } The onfocus is set to null so that if the user puts something in the field and decides to change it, their input is not erased (so it is only erased once). Now, if the user moves on to the next field without entering any data, then the default value is restored

问题 so I try to hide/show a div element with using onfocus and onblur: <textarea onfocus="document.getElementById('divID1').style.display='block';" onblur="document.getElementById('divID1').style.display='none';"></textarea> <div id="divID1"> This works fine, but the problem is that the div hides again when the textarea/input doesn't have focus anymore. This is the whole code: JSFIDDLE link. You can see that you can't check the Checkbox or select text. What can I do to still display the div

问题 I am attempting to format a phone number in a form input field using jquery, not sure what I am doing wrong.... $(document).ready(function() { $('#phone').focusout(function() { function phoneFormat(phone) { phone = phone.replace(/[^0-9]/g, ''); phone = phone.replace(/(\d{3})(\d{3})(\d{4})/, "($1) $2-$3"); return phone; } var phone = $(this).text(); phone = phoneFormat(phone); $(this).text(phone); }); }); 回答1: You have to change this var phone = $(this).text(); phone = phoneFormat(phone); $

问题 On some occasions, when focus is set to a particular textbox, the cursor parks itself before the text like this: Yet, the TextBox has a GotFocus handler that explicitly selects all the text: private void txtQty_GotFocus(object sender, EventArgs e) { try { if (deviceInfo.isKeyboardShown()) { SipShowIM(SIPF_OFF); } txtQty.SelectAll(); txtQty.BackColor = Color.Yellow; } catch (Exception ex) { NRBQ.ExceptionHandler(ex, "frmEntry.txtQty.GotFocus"); } } Also, the BackColor is not set to yellow. But

问题 On some occasions, when focus is set to a particular textbox, the cursor parks itself before the text like this: Yet, the TextBox has a GotFocus handler that explicitly selects all the text: private void txtQty_GotFocus(object sender, EventArgs e) { try { if (deviceInfo.isKeyboardShown()) { SipShowIM(SIPF_OFF); } txtQty.SelectAll(); txtQty.BackColor = Color.Yellow; } catch (Exception ex) { NRBQ.ExceptionHandler(ex, "frmEntry.txtQty.GotFocus"); } } Also, the BackColor is not set to yellow. But

问题 I always use this snippet in my work: <input type="text" onblur="if (this.value=='') { this.value='your email'; }" onfocus="if (this.value == 'your email') { this.value=''; }" value="your email" /> Basically it will show a text box with "your email" as the value, when the clicks the text input box - the value becomes blank.. thus they type their email.. if they don't type an email it will reset back to the "your email". I want to do this or similar with textarea and convert it to jQuery (also

问题 I have created a live search, I want when user clicks on ESC it should focus to input box and remove its content if not empty automatically. I am able to remove the content but it won't focus on key press. The function focus(); works when I use it on window.onload I have the existing code: (also tried the ones maked in comment thanks to Focus Input Box On Load, and JavaScript set focus to HTML form element) var aramaAlani = document.getElementById("id_arama"); $( document ).on( 'keydown',

问题 Currently I have two edit-text,suppose I want to make validation for empty edittext check.What is better way for runtime validation. My code is; final EditText ev1 = (EditText) findViewById(R.id.editText1); final EditText ev2 = (EditText) findViewById(R.id.editText2); ev1.setOnFocusChangeListener(new OnFocusChangeListener() { @Override public void onFocusChange(View rv, boolean hasFocus) { if(!hasFocus && ev1.getText().length()==0) { ev1.requestFocus(); ev2.clearFocus(); } } }); In this

问题 I am trying to make key bindings in Java on a JPanel. I want a certain action to execute when I press the 'w' button. I follow the Java tutorial on making bindings, but the actionPerformed method does not execute (i.e. no text prints out). The following is the entirety of the code for my test GUI, with the relevant part highlighted: import java.awt.BorderLayout; import java.awt.event.ActionEvent; import javax.swing.AbstractAction; import javax.swing.JFrame; import javax.swing.JPanel; import