Everything you need to know about underscore template is here. Only 3 things to keep in mind: <% %> – to execute some code <%= %> – to print some value in template <%- %> – to print some values HTML escaped That’s all about it. Simple example: var tpl = _.template(“<h1>Some text: <%= foo … Read more
Here’s a function for this use case: function getFormData($form){ var unindexed_array = $form.serializeArray(); var indexed_array = {}; $.map(unindexed_array, function(n, i){ indexed_array[n[‘name’]] = n[‘value’]; }); return indexed_array; } Usage: var $form = $(“#form_data”); var data = getFormData($form);
Those script tags are a common way to implement templating functionality (like in PHP) but on the client side. By setting the type to “text/template”, it’s not a script that the browser can understand, and so the browser will simply ignore it. This allows you to put anything in there, which can then be extracted … Read more
If you want to avoid external libraries, you can concisely implement a vanilla version of groupBy() like so: var groupBy = function(xs, key) { return xs.reduce(function(rv, x) { (rv[x[key]] = rv[x[key]] || []).push(x); return rv; }, {}); }; console.log(groupBy([‘one’, ‘two’, ‘three’], ‘length’)); // => {3: [“one”, “two”], 5: [“three”]}
I created Lodash to provide more consistent cross-environment iteration support for arrays, strings, objects, and arguments objects1. It has since become a superset of Underscore.js, providing more consistent API behavior, more features (like AMD support, deep clone, and deep merge), more thorough documentation and unit tests (tests which run in Node.js, RingoJS, Rhino, Narwhal, PhantomJS, … Read more