dom

问题 I'm using jQuery to dynamically create HTML elements, and now have a need to store JavaScript data against them. However, I'm now concerned about memory leaks as I never actually call 'remove' on my objects. I '.append' and '.detach' them, but never '.remove'. The documentation for jQuery seems to suggest that I should be calling remove to clean up it's footprint on the object - events, data, etc. Is this strictly necessary on modern browsers, or will the disappearance of any reference to the

问题 I was wondering when it would be a good idea to have a single database vs one database with multiple object stores. I've read most tutorials on the web as well as looked at the specification for indexedDB, but could not find a good example comparing these different concepts. Does anyone have a concrete example (a design model using multiple object stores and/or code) for this sort of thing? 回答1: As long as there is no cross transactional manipulation among object stores, you can separate them

问题 i have a table such this: <tr> <td><font color="#000066">ADANA</font></td> <td><font color="#000066">SEYHAN</font></td> <td><font color="#000066">ZÜBEYDE HANIM ANAOKULU</font></td> <td><font color="#000066">KURTULUŞ MAH.64011 SOK. NO:1</font></td> <td><font color="#000066">(322) 453 10 60</font></td> <td><font color="#000066">(322) 459 19 77</font></td> </tr> And I want to get td's content. But I could not manage it. $xml = new DOMDocument(); $xml->validateOnParse = true; $xml->loadHTML($data

问题 i have a table such this: <tr> <td><font color="#000066">ADANA</font></td> <td><font color="#000066">SEYHAN</font></td> <td><font color="#000066">ZÜBEYDE HANIM ANAOKULU</font></td> <td><font color="#000066">KURTULUŞ MAH.64011 SOK. NO:1</font></td> <td><font color="#000066">(322) 453 10 60</font></td> <td><font color="#000066">(322) 459 19 77</font></td> </tr> And I want to get td's content. But I could not manage it. $xml = new DOMDocument(); $xml->validateOnParse = true; $xml->loadHTML($data

问题 I have HTML page with some HTML element with ID="logo" . I need to create JS script (with no external libs calls) that will overwrite that html element with other HTML element like "<div id=logo> stuff inside </div>" . 回答1: Most of the time, it's just the content you want to replace, not the element itself. If you actually replace the element, you'll find that event handlers attached to it are no longer attached (because they were attached to the old one). Replacing its content Replacing the

问题 I have HTML page with some HTML element with ID="logo" . I need to create JS script (with no external libs calls) that will overwrite that html element with other HTML element like "<div id=logo> stuff inside </div>" . 回答1: Most of the time, it's just the content you want to replace, not the element itself. If you actually replace the element, you'll find that event handlers attached to it are no longer attached (because they were attached to the old one). Replacing its content Replacing the

问题 I have HTML page with some HTML element with ID="logo" . I need to create JS script (with no external libs calls) that will overwrite that html element with other HTML element like "<div id=logo> stuff inside </div>" . 回答1: Most of the time, it's just the content you want to replace, not the element itself. If you actually replace the element, you'll find that event handlers attached to it are no longer attached (because they were attached to the old one). Replacing its content Replacing the

问题 I have HTML page with some HTML element with ID="logo" . I need to create JS script (with no external libs calls) that will overwrite that html element with other HTML element like "<div id=logo> stuff inside </div>" . 回答1: Most of the time, it's just the content you want to replace, not the element itself. If you actually replace the element, you'll find that event handlers attached to it are no longer attached (because they were attached to the old one). Replacing its content Replacing the

问题 I have HTML page with some HTML element with ID="logo" . I need to create JS script (with no external libs calls) that will overwrite that html element with other HTML element like "<div id=logo> stuff inside </div>" . 回答1: Most of the time, it's just the content you want to replace, not the element itself. If you actually replace the element, you'll find that event handlers attached to it are no longer attached (because they were attached to the old one). Replacing its content Replacing the

问题 I am trying to apply style to the text selected by the user(mouse drag) for which I need to get the start and end index of the selected text. I have tried using "indexOf(...)" method. but it returns the first occurrence of the selected substring. I want the actual position of the substring with respect to the original string. For example.., if I select the letter 'O' at position 3 [YOL O Cobe], I expect the index as 3 but the indexOf() method returns 1 which is the first occurrence of 'O' in