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Javier Neira

6 Advanced JavaScript Techniques You Should Know - 3 views

sixrevisions.com/...ipt-techniques-you-should-know

javascript tips bestpractices code snippets

shared by Javier Neira on 09 Oct 09 - Cached
  • function showStatistics(args) { document.write("<p><strong>Name:</strong> " + args.name + "<br />"); document.write("<strong>Team:</strong> " + args.team + "<br />"); if (typeof args.position === "string") { document.write("<strong>Position:</strong> " + args.position + "<br />"); } if (typeof args.average === "number") { document.write("<strong>Average:</strong> " + args.average + "<br />"); } if (typeof args.homeruns === "number") { document.write("<strong>Home Runs:</strong> " + args.homeruns + "<br />"); } if (typeof args.rbi === "number") { document.write("<strong>Runs Batted In:</strong> " + args.rbi + "</p>"); } } showStatistics({ name: "Mark Teixeira" }); showStatistics({ name: "Mark Teixeira", team: "New York Yankees" }); showStatistics({ name: "Mark Teixeira", team: "New York Yankees", position: "1st Base", average: .284, homeruns: 32, rbi: 101 });
  • Object-oriented JavaScript implements namespace-like principles due to the fact that properties and methods are declared inside of objects, thus there are less likely to be conflicts. A conflict could arise, however, through object names. And very likely, the conflict will occur "silently", thus you may not be alerted to the issue immediately.
  • if (typeof MY == "undefined") { MY = new Object(); MY.CUSTOM = new Object(); } MY.CUSTOM.namespace = function() { function showStatistics(args) { document.write("<p><strong>Name:</strong> " + args.name + "<br />"); document.write("<strong>Team:</strong> " + args.team + "<br />"); if (typeof args.position === "string") { document.write("<strong>Position:</strong> " + args.position + "<br />"); } if (typeof args.average === "number") { document.write("<strong>Average:</strong> " + args.average + "<br />"); } if (typeof args.homeruns === "number") { document.write("<strong>Home Runs:</strong> " + args.homeruns + "<br />"); } if (typeof args.rbi === "number") { document.write("<strong>Runs Batted In:</strong> " + args.rbi + "</p>"); } } showStatistics({ name: "Mark Teixeira", team: "New York Yankees", position: "1st Base", average: .284, homeruns: 32, rbi: 101 }); } MY.CUSTOM.namespace();
  • ...1 more annotation...
  • Rendering Readable HTML
  • Javier Neira on 09 Oct 09
     
    //2. Object Literals to Pass Optional Arguments function showStatistics(args) { document.write("Name: " + args.name + "
    "); document.write("Team: " + args.team + "
    "); if (typeof args.position === "string") { document.write("Position: " + args.position + "
    "); } if (typeof args.average === "number") { document.write("Average: " + args.average + "
    "); } if (typeof args.homeruns === "number") { document.write("Home Runs: " + args.homeruns + "
    "); } if (typeof args.rbi === "number") { document.write("Runs Batted In: " + args.rbi + ""); } } showStatistics({ name: "Mark Teixeira" }); showStatistics({ name: "Mark Teixeira", team: "New York Yankees" }); showStatistics({ name: "Mark Teixeira", team: "New York Yankees", position: "1st Base", average: .284, homeruns: 32, rbi: 101 }); //Using Namespaces to Prevent Conflicts if (typeof MY == "undefined") { MY = new Object(); MY.CUSTOM = new Object(); } MY.CUSTOM.namespace = function() { function showStatistics(args) { .................. } showStatistics({ name: "Mark Teixeira", team: "New York Yankees", position: "1st Base", average: .284, homeruns: 32, rbi: 101 }); } MY.CUSTOM.namespace();
yc c

Javascript test page - Universal mouse control - X Y mouse position - 0 views

dunnbypaul.net/js_mouse

javascript draganddrop script testpage mouse position

shared by yc c on 14 Mar 10 - Cached
  • yc c on 14 Mar 10
     
    enable to see the x & Y value mouse position
Javier Neira

Three map implementations in javascript. Which one is better? - Stack Overflow - 1 views

stackoverflow.com/...javascript-which-one-is-better

javascript map function implementation

shared by Javier Neira on 13 Oct 09 - Cached
  • if (!Array.prototype.map) {  Array.prototype.map = function(fun /*, thisp*/)   {    var len = this.length >>> 0;  // make sure length is a positive number    if (typeof fun != "function") // make sure the first argument is a function      throw new TypeError();    var res = new Array(len);  // initialize the resulting array    var thisp = arguments[1];  // an optional 'context' argument    for (var i = 0; i < len; i++) {      if (i in this)        res[i] = fun.call(thisp, this[i], i, this);  // fill the resulting array    }    return res;  };}
  • Javier Neira on 13 Oct 09
     
    if (!Array.prototype.map) { Array.prototype.map = function(fun /*, thisp*/) { var len = this.length >>> 0; // make sure length is a positive number if (typeof fun != "function") // make sure the first argument is a function throw new TypeError(); var res = new Array(len); // initialize the resulting array var thisp = arguments[1]; // an optional 'context' argument for (var i = 0; i < len; i++) { if (i in this) res[i] = fun.call(thisp, this[i], i, this); // fill the resulting array } return res; }; }
Ivan Pavlov

forms.selection - JSFromHell.com: JavaScript Repository - 0 views

jsfromhell.com/selection

javascript

shared by Ivan Pavlov on 11 Oct 07 - Cached
  • Ivan Pavlov on 11 Oct 07
     
    Retrieves and sets the cursor position, as well the selected text of inputs and textareas. After searching, I saw it's the only code which retrieves right information in textareas under Internet Explorer without damaging the "Ctrl+Z"
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