textinput | 易学教程

how to write content in a Specific position in a File

阅读更多关于 how to write content in a Specific position in a File

问题 Suppose I have a file named abhishek.txt and that contains the following line I am , and what is your name. Now I want to write Abhishek after "I am" like I am Abhishek, .. How to write the content in this specific position directly. 回答1: You can't insert data into a file. You can overwrite data at a specific location with RandomAccessFile . However an insert requires changing all of the data after it. For your case try something like this instead: File file = new File("abhishek.txt");

Selecting all text in HTML text input when clicked

阅读更多关于 Selecting all text in HTML text input when clicked

I have the following code to display a textbox in a HTML webpage. <input type="text" id="userid" name="userid" value="Please enter the user ID" /> When the page displays, the text contains the Please enter the user ID message. However, I found that the user needs to click 3 times in order to select all the text (in this case it is Please enter the user ID ). Is it possible to select the entire text with only one click? Edit: Sorry, I forgot to say: I must use the input type="text" Boris Pavlović You can use this javascript snippet: <input onClick="this.select();" value="Sample Text" /> But

How to create a text input box with pygame?

阅读更多关于 How to create a text input box with pygame?

问题 I want to get some text input from the user in python and display what they are typing in a text box, and when they press enter, it gets stored in a string. I\'ve looked everywhere but i just can\'t find anything.(I\'m using pygame) 回答1: You can define a rect as the area of the input box. If a pygame.MOUSEBUTTONDOWN event occurs, use the colliderect method of the input_box rect to check if it collides with the event.pos and then activate it by setting a active variable to True . If the box is

Selecting all text in HTML text input when clicked

阅读更多关于 Selecting all text in HTML text input when clicked

问题 I have the following code to display a textbox in a HTML webpage. <input type=\"text\" id=\"userid\" name=\"userid\" value=\"Please enter the user ID\" /> When the page displays, the text contains the Please enter the user ID message. However, I found that the user needs to click 3 times in order to select all the text (in this case it is Please enter the user ID ). Is it possible to select the entire text with only one click? Edit: Sorry, I forgot to say: I must use the input type=\"text\"

Get the value in an input text box

阅读更多关于 Get the value in an input text box

问题 What are the ways to get and render an input value using jQuery? Here is one: <script type=\"text/javascript\" src=\"http://code.jquery.com/jquery-1.4.3.min.js\" ></script> <script type=\"text/javascript\"> $(document).ready(function(){ $(\"#txt_name\").keyup(function(){ alert($(this).val()); }); }) </script> <input type=\"text\" id=\"txt_name\" /> 回答1: //Get var bla = $('#txt_name').val(); //Set $('#txt_name').val(bla); 回答2: You can only select a value with the following two ways: // First