106 lines
3.0 KiB
JavaScript
106 lines
3.0 KiB
JavaScript
/**
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* jQuery plugin for micro templates
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*
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* Strings are automatically escaped, but that can be disabled by setting
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* escapeFunction to null.
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*
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* Usage examples:
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*
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* var htmlStr = '<p>Bake, uncovered, until the {greasystuff} is melted and the {pasta} is heated through, about {min} minutes.</p>'
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* $(htmlStr).octemplate({greasystuff: 'cheese', pasta: 'macaroni', min: 10});
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*
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* var htmlStr = '<p>Welcome back {user}</p>';
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* $(htmlStr).octemplate({user: 'John Q. Public'}, {escapeFunction: null});
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*
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* Be aware that the target string must be wrapped in an HTML element for the
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* plugin to work. The following won't work:
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*
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* var textStr = 'Welcome back {user}';
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* $(textStr).octemplate({user: 'John Q. Public'});
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*
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* For anything larger than one-liners, you can use a simple $.get() ajax
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* request to get the template, or you can embed them it the page using the
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* text/template type:
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*
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* <script id="contactListItemTemplate" type="text/template">
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* <tr class="contact" data-id="{id}">
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* <td class="name">
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* <input type="checkbox" name="id" value="{id}" /><span class="nametext">{name}</span>
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* </td>
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* <td class="email">
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* <a href="mailto:{email}">{email}</a>
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* </td>
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* <td class="phone">{phone}</td>
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* </tr>
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* </script>
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*
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* var $tmpl = $('#contactListItemTemplate');
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* var contacts = // fetched in some ajax call
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*
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* $.each(contacts, function(idx, contact) {
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* $contactList.append(
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* $tmpl.octemplate({
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* id: contact.getId(),
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* name: contact.getDisplayName(),
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* email: contact.getPreferredEmail(),
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* phone: contact.getPreferredPhone(),
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* });
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* );
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* });
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*/
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(function( $ ) {
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/**
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* Object Template
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* Inspired by micro templating done by e.g. underscore.js
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*/
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var Template = {
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init: function(vars, options, elem) {
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// Mix in the passed in options with the default options
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this.vars = vars;
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this.options = $.extend({},this.options,options);
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this.elem = elem;
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var self = this;
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if(typeof this.options.escapeFunction === 'function') {
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var keys = Object.keys(this.vars);
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for (var key = 0; key < keys.length; key++) {
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if(typeof this.vars[keys[key]] === 'string') {
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this.vars[keys[key]] = self.options.escapeFunction(this.vars[keys[key]]);
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}
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}
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}
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var _html = this._build(this.vars);
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return $(_html);
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},
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// From stackoverflow.com/questions/1408289/best-way-to-do-variable-interpolation-in-javascript
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_build: function(o){
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var data = this.elem.attr('type') === 'text/template' ? this.elem.html() : this.elem.get(0).outerHTML;
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try {
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return data.replace(/{([^{}]*)}/g,
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function (a, b) {
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var r = o[b];
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return typeof r === 'string' || typeof r === 'number' ? r : a;
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}
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);
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} catch(e) {
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console.error(e, 'data:', data);
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}
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},
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options: {
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escapeFunction: escapeHTML
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}
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};
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$.fn.octemplate = function(vars, options) {
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vars = vars || {};
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if(this.length) {
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var _template = Object.create(Template);
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return _template.init(vars, options, this);
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}
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};
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})( jQuery );
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