jquery - Using regex to change sub element image from off to on and back -

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In an effort to keep the code, I was hoping to use a regular expression with jquery to hover an image for. 

  $ (function () {$ ("ul.dropdown li"). Hover (function () {$ (this) $ ('ul: Css ('visibility', 'visible');}, function () {$ (this) .removeClass ("hover"); $ ('ul: first', this). CSS ('visibility ',' Hidden ');});});

html: 

  & lt; Ul class = "dropdown" & gt; & Lt; Li & gt; & Lt; A href = "" & gt; & Lt; IMG src = "picture / nav_first_of page" /> & Lt; / A & gt; & Lt; Ul class = "sub_menu sub1" & gt; & Lt; Li & gt; & Lt; Div class = "topnav_dropdown_left" & gt; & Lt; A href = "" & gt; & Lt; IMG src = "picture / topno_dropdown_first.fg.jpg" /> & Lt; / A & gt; & Lt; / Div & gt; & Lt; / Li & gt; & Lt; / Ul & gt; & Lt; / Li & gt; & Lt; Li & gt; & Lt; A href = "" & gt; & Lt; Img src = "picture / nav_second_off.png" /> & Lt; / A & gt; & Lt; Ul class = "sub_menu sub2" & gt; & Lt; Li & gt; & Lt; Div class = "topnav_dropdown_left" & gt; & Lt; A href = "" & gt; & Lt; IMG src = "picture / topname_dropdown_second.agegg" /> & Lt; / A & gt; & Lt; / Div & gt; & Lt; / Li & gt; & Lt; / Ul & gt; & Lt; / Li & gt; & Lt; Li & gt; & Lt; A href = "" & gt; & Lt; IMG src = "Pictures / Navigation_off pages" /> & Lt; / A & gt; & Lt; Ul class = "sub_menu all 3" & gt; & Lt; Li & gt; & Lt; Div class = "topnav_dropdown_left" & gt; & Lt; A href = "" & gt; & Lt; IMG src = "picture / topno_dropdown_third.gegpg" /> & Lt; / A & gt; & Lt; / Div & gt; & Lt; / Li & gt; & Lt; / Ul & gt; & Lt; / Li & gt; & Lt; / Ul & gt;

Therefore, using the regex using the hover function to switch the above nav_first_off.png, nav_second_off.png with li hover, and switch to _off.png and switch to _on.png By doing <

You can pass the src attribute to a function For example: 

  $ (function () {$ ("ul.dropdown li"). Hover (function () $ $ (this) .addClass ("hover");}) $ ('Ul: first', this). CSS ('visibility', 'view'); $ ('an IMG', this). 'Src', function (i, src) {return src.replace (' _ Off ',' _ on ');})}}, function () {$ (this) .removeClass ("hover"); $ ('Ul:' first ', this). CSS ('visibility', 'hidden'); $ ('An IMG', this) .attr ('src', function (i, src) {return src.replace ('_ on' '_off');});}); }); In the

function, src parameter function (i, src) is old src value, so we Just doing it on one, you can pass as much more complex regex as it is necessary.


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