named vs inline templates in Knockout.js v3.0 (v23)

Revision 23 of this benchmark created on

Preparation HTML

<div id="main"></div>

<script id="templateDummy" type="text/html"></script>

<script id="templateInline" type="text/html">
    <table data-bind="template: { foreach: rows }">
        <tr data-bind="template: { foreach: cells }">
            <td data-bind="text: 'Cell ' + id()"></td>
        </tr>
    </table>
</script>

<script id="templateMemory" type="text/html">
    <table data-bind="template: { foreach: rows, id: 'templateRow' }">
        <tr data-bind="template: { foreach: cells, id: 'templateCell' }">
            <td data-bind="text: 'Cell ' + id()"></td>
        </tr>
    </table>
</script>

<script id="templateNamed" type="text/html">
    <table data-bind="template: { foreach: rows, name: 'templateRow' }"></table>
</script>
<script id="templateRow" type="text/html">
    <tr data-bind="template: { foreach: cells, name: 'templateCell' }"></tr>
</script>
<script id="templateCell" type="text/html">
     <td data-bind="text: 'Cell ' + id()"></td>
</script>


<script src="https://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/knockout/3.2.0/knockout-min.js">
</script>


<script>

//define a template source that simply treats the template name as its content
ko.templateSources.stringTemplate = function(template, templates) {
    this.templateName = template;
    this.templates = templates;
}

ko.utils.extend(ko.templateSources.stringTemplate.prototype, {
    data: function(key, value) {
        console.log("data", key, value, this.templateName);
        this.templates._data = this.templates._data || {};
        this.templates._data[this.templateName] = this.templates._data[this.templateName] || {};
        
        if (arguments.length === 1) {
            return this.templates._data[this.templateName][key];
        }
        
        this.templates._data[this.templateName][key] = value;
    },
    text: function(value) {
        console.log("text", value, this.templateName)
        if (arguments.length === 0) {
           return this.templates[this.templateName];
        } 
        this.templates[this.templateName] = value;   
    }
});
   

//modify an existing templateEngine to work with string templates
function createStringTemplateEngine(templateEngine, templates) {
    templateEngine.makeTemplateSource = function(template) {
        return new ko.templateSources.stringTemplate(template, templates);
    }   
    return templateEngine;
}

function Cell(id) {
    this.id = ko.observable(id);   
}
function Row(id) {
    this.id = ko.observable(id);
    this.cells = ko.observableArray();
}

var viewModel = {
    rows: ko.observableArray()
};

for (var i = 0; i < 5; i++) {
    var row = new Row(i);
    
    for (var j = 0; j < 5; j++) {
        row.cells.push(new Cell(i + " - " + j));
    }
    viewModel.rows.push(row);
}
var main = $("#main");
</script>

Setup

setTimeout(function() {
    ui.benchmarks[0].setup = function(){
      main.attr('data-bind', 'template: "templateNamed"');
    }; 
    ui.benchmarks[1].setup = function(){
      main.attr('data-bind', 'template: "templateInline"');
    };
    ui.benchmarks[2].setup = function(){
  
  ko.setTemplateEngine(createStringTemplateEngine(new ko.nativeTemplateEngine(), {
  'templateNamedMemory': '<table data-bind="template: { foreach: rows, name: \'templateRowMemory\' }"></table>',
  'templateRowMemory': '<tr data-bind="template: { foreach: cells, name: \'templateCellMemory\' }"></tr>',
  'templateCellMemory': '<td data-bind="text: \'Cell \' + id()"></td>'
  }));
      main.attr('data-bind', 'template: "templateNamedMemory"');
    };
  }, 1);

Test runner

Ready to run.

Testing in
TestOps/sec
templateNamed
ko.applyBindings(viewModel, main[0]);
ko.cleanNode(main[0]);
ready
templateInline
ko.applyBindings(viewModel, main[0]);
ko.cleanNode(main[0]);
ready
stringtemplate
ko.applyBindings(viewModel, main[0]);
ko.cleanNode(main[0]);
ready

Revisions

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