Posted in webdev
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7:01 am, September 17, 2021
 

creating a button creator in javascript

still working on this. 

So i have been working on a button creator in javascript, so that i can create html/css buttons on the fly a bit easier and have the button html and css easily exportable. 

Im up to adding color and shadow elements, but i was actually creating functions for each element and running them, then i started adding the values to an object so they can be shared, but as i add more i realise that its just annoying attahing events to each of these elements, like each slider, etc. 

So rather than doing multiple functions why not just for each element should be able to just update the object and then run a function that does the other updates, and keep it fairly simple. So each time an item is updated then all items update. It updates the object target, then another function runs and adds each part of the object into the target button. I think that should work better. 

Current Function Example

Javascript - Update Padding Top and Bottom

function update_padding_tb_object(text_id,range_id,padding_id) {
    let range_id_value = document.getElementById(range_id).value;
    let text_id_value = document.getElementById(text_id).value
    css_elements.padding_top = range_id_value+"px";
    css_elements.padding_bottom = range_id_value+"px";
    let padding_string = css_elements.padding_top + " "+css_elements.padding_right+" "+css_elements.padding_bottom+" "+css_elements.padding_left;
    document.getElementById(text_id).value=document.getElementById(range_id).value; // update text pixel value
    document.getElementById(padding_id).style.padding=padding_string;
    run_updates();
  }

HTML

<div class="slide-group mb-1">
            <div class="input-group">
              <span class="input-group-text">top bottom padding</span>
              <input type="text" id="padding_tb_val" name="padding_val" value="10" class="form-control" disabled>
              <span class="input-group-text">px</span>
            </div>
            <div class="col-lg"><!-- check_slider('padding_val','padding'); -->
              <input type="range" id="padding_tb" name="padding" min="0" max="50" value="10" class="form-range" oninput="update_padding_tb_object('padding_tb_val','padding_tb','the-button');">
            </div>
          </div>

So at the moment this function grabs random id's related and then updates them individually, this should just update the relavent parts of the following object, and then the run_updates should update all the form elements, css, and html output areas. 

Javascript - Current Object for the CSS Elements

let css_elements = {
    padding_top:"10px",
    padding_bottom:"10px",
    padding_left:"10px",
    padding_right:"10px",
    border_radius:"5px",
    background_color:"#123456FF",
    color_text:"#FFFFFFFF",
    shadow_blur:"5px",
    shadow_color:"#000000FF"
  };

So it could be more like this:

Javascript

  function update_padding_tb_object_new(padding_tb_val,padding_val_text) {
    let id_value = document.getElementById(padding_tb_val).value; // get value from slider
    document.getElementById(padding_val_text).value = id_value; // update range text val.
    css_elements.padding_top = id_value+"px";
    css_elements.padding_bottom = id_value+"px";
    run_updates();
  }

then in the run_updates this will do all the update html, css, and the current styles for each. 

Javascript

function update_values() {
  /* update padding */
    let padding_string = css_elements.padding_top + " "+css_elements.padding_right+" "+css_elements.padding_bottom+" "+css_elements.padding_left;
    document.getElementById('the-button').style.padding=padding_string;
  }

So this is now finished, i decided to just leave it with some basic button features, but it works well now. here is the live link.

I was also thinking of saving each value somewhere so the buttons could be shared that way. But i also wanted to get this tool finished so i can move onto something else. 

Still to do:

  • add a hover over state
  • save changes somewhere and allow sharing of buttons
  • add text-decoration:none; 
  • allow button title text changes
  • custom class name and id change

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This is my test area for webdev. I keep a collection of code here, mostly for my reference. Also if i find a good link, i usually add it here and then forget about it. more...

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"Olivia, my eldest daughter, caught measles when she was seven years old. As the illness took its usual course I can remember reading to her often in bed and not feeling particularly alarmed about it. Then one morning, when she was well on the road to recovery, I was sitting on her bed showing her how to fashion little animals out of coloured pipe-cleaners, and when it came to her turn to make one herself, I noticed that her fingers and her mind were not working together and she couldn’t do anything. 'Are you feeling all right?' I asked her. 'I feel all sleepy,' she said. In an hour, she was unconscious. In twelve hours she was dead. The measles had turned into a terrible thing called measles encephalitis and there was nothing the doctors could do to save her. That was...in 1962, but even now, if a child with measles happens to develop the same deadly reaction from measles as Olivia did, there would still be nothing the doctors could do to help her. On the other hand, there is today something that parents can do to make sure that this sort of tragedy does not happen to a child of theirs. They can insist that their child is immunised against measles. ...I dedicated two of my books to Olivia, the first was ‘James and the Giant Peach’. That was when she was still alive. The second was ‘The BFG’, dedicated to her memory after she had died from measles. You will see her name at the beginning of each of these books. And I know how happy she would be if only she could know that her death had helped to save a good deal of illness and death among other children."

I just checked google books for BFG, and the dedication is there. 

https://www.google.com.au/books/edition/_/quybcXrFhCIC?hl=en&gbpv=1 


Roald Dahl, 1986
Random CSS Property

text-combine-upright

The text-combine-upright CSS property sets the combination of characters into the space of a single character. If the combined text is wider than 1em, the user agent must fit the contents within 1em. The resulting composition is treated as a single upright glyph for layout and decoration. This property only has an effect in vertical writing modes.
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