javascript - Multiple buttons to show/hide div depending on current display -

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brand-spanking-new javascript , trying implement part of school assessment site.

what i'm trying is, using multiple buttons, change display style of div. part i'm having trouble getting function either stay open (style.display = block) if different button pressed last, or close (style.display = none) if same button previous.

the reasoning behind next step implement ajax call different content div based on same buttons. trying basics there first. (learning exercise)

    function toggle_visibility(caller) {     var e = document.getelementbyid('hidden');     var current;     if(caller == current){         e.style.display = 'none';         current = 'none';     }else{         e.style.display = 'block';         current = caller;     }

that's script is, buttons calling above script different 'caller':

<button onclick="toggle_visibility('button1')">button1</button> <button onclick="toggle_visibility('button2')">button2</button> <button onclick="toggle_visibility('button3')">button3</button>

what doing wrong or missing? thanks.

the variable "current" scoped function toggle_visibility. each time button clicked , function invoked, "current" variable gets recreated.

you need move declaration "var current;" outside of function toggle_visibility.

when you're ready, read details: https://developer.mozilla.org/en-us/docs/web/javascript/reference/functions_and_function_scope


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