Idioms for updating properties with weld

weld-ideas.md

Here are the options I've thought about for attribute update syntax

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Option 1. Certain types of html elements where the most common use case is attribute update, such as <img>, <iframe>, <input>, <link>, <object>, <param>... and <a> update the logical attribute by default.

    $('<a id="target" href="http://yahoo.com"><span id="text">Yahoo</span></a>')
        .weld({target:'http://google.com', text: 'Google'});

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Option 2. Attribute to update is a configuration option

    var config = {setattr: {a: 'href'}};
    $('<a id="target" href="http://yahoo.com"><span id="text">Yahoo</span></a>')
        .weld({target:'http://google.com', text: 'Google'}, config);

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Option 3. Attribute to update is indicated in the HTML.

    $('<a id="target" data-weld-attr="href" href="http://yahoo.com">' + 
                                         '<span id="text">Yahoo</span></a>')
        .weld({target:'http://google.com', text: 'Google'});

---

Option 4. Attribute to update is indicated in the data object. (the '$' is a placeholder for the attribute separator character)

    $('<a id="target" href="http://yahoo.com">Yahoo</a>')
        .weld({target$href:'http://google.com', target: 'Google'});

I would prefer not to create a microlanguage here.. the other option is to use map/alias :)

I understand your concern. I'll implement #4 for my own purposes.