Recent Questions Tree Menu In Html W3 School
Q: I will build menu for several books’ Contents, each book is more than 100 lines and has links. I think if all the books’ contents in 1 *.JS file then it is TOO LOONG!!.
Can I break it down to 1 book for 1*.JS ? How?
A: You cannot divide your menuItems parameter.
You can only use one .js file for your menu parameters and the other.js file for your menuItems = [...];
But you can do it in two ways.
1) You can try to use several menus on the one page, for example:
param.js // file with menu parameters (all parameters before menuItems = [...];)
menu1.js // menuItems for "AC-DC", "ANLOG"
menu2.js // menuItems for "DIGITAL", "WinXP"
menu3.js // menuItems for "MS-Word", "MS-Excel"
In these menu files you should write
menuItems = [
...
];
dm_init();
Then you should install your menu in the following way
<script type="text/javascript" src="param.js"></script>
<table>
...
<script type="text/javascript" src="menu1.js"></script>
...
<script type="text/javascript" src="menu2.js"></script>
...
<script type="text/javascript" src="menu3.js"></script>
But it will be easier to use vertical menu in such case
var isHorizontal=0;
var smColumns=1;
2) You can also try to add some code, see the attached example.
In the first file (@MY books (Multiple Col.js) I write menuItems for the first item "AC-DC".
Notice that you should delete comma at the end of the last item
var menuItems = [
["AC-DC","", , , , , , , , ],
["|@Book1","testlink.htm", , , , , , , , ],
...
["|@Book3","", , , , , , , , ],
["||CH02","", , , , , , , , ],
["||CH01","", , , , , , , , ] // delete comma at the end of the last item
];
In the second file (@MY books (1.js) you should write
menuItems = menuItems.concat(
[
["ANLOG","", , , , , , , , ],
["|@Book1","", , , , , , , , ],
["|@Book2","", , , , , , , , ],
["|@Book3","", , , , , , , , ] // delete comma at the end of the last item
]
);
In the third file (@MY books (2.js) you should write
menuItems = menuItems.concat(
[
["DIGITAL","", , , , , , , , ],
["|Item 1332","", , , , , , , , ],
["WinXP","", , , , , , , , ],
["|Item 1333","", , , , , , , , ],
["MS-Word","", , , , , , , , ],
["|Item 1334","", , , , , , , , ],
["MS-Excel","", , , , , , , , ],
["|Item 1335","", , , , , , , , ] // delete comma at the end of the last item
]
);
dm_init();
Notice that you should write dm_init(); function in the last file.
In the .html file you should write
...
<tr>
<script type="text/javascript" src="@MY books (Multiple Col.js"></script>
<script type="text/javascript" src="@MY books (1.js"></script>
<script type="text/javascript" src="@MY books (2.js"></script>
</tr>
I hope you understand me.
Q: I am using the dhtml-tabs code. I have 2 tabs that I use for a basic form and an advanced form. The advanced form is on the second tab. When I submit, I get results. When I click the back button, the selected drop menu bar tab is the first one, and not the second. Is there a way to configure the tabs to be persistent or sticky. Such that clicking on the back button will result on being on the second tab, which was the last tab before going to a new page?
A: You can try to use the following function:
dtabs_itemClick(0,1)
To open your second tab.
Q: The only remaining problem I see is that the dhtml popup menu appears in slightly
different positions depending upon where your mouse touches the icon.
Is there a way to make the menu position absolute in respect to the icon?
I have tried playing with the menu item parameters that seemed related with no success.
A: See dm_popup() function parameters:
return dm_popup(menuInd, pause, event, x, y)
menuInd - index of the menu on a page, >= 0.
pause - determines the time when the menu will be hidden.
event - constant. Do not change.
x, y - optional. Set these parameters if you want the menu to appear in the specified place.
In other case the menu will be shown in the mouse position.
Q: Just wondering if it's possible to have the sub menu of my collapsible dhtml menu that appear when the "+" is clicked stay open when another page loads. I tried downloading the trial version & can't get that to happen.
Click on "web development" and then "web design portfolio" - when the new page loads the menu closes. Is it possible to have it remember which sub menus were showing when the new page loads?
A: Javascript/DHTML Tree has save state feature. You should set the followingparameter:
var tsaveState=1;
