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// For Parent.js
var Parent = React.createClass({
    getInitialState: function () {
        return { parentValue: "" };
    },

    // the callback function is passed to Child as props
    passValueFunc: function (para) {
        if (this.state[para] != undefined) {
            return this.state[para];

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// For Parent.js
var Parent = React.createClass({
    getInitialState: function () {
        return { childRef: "childRef" };
    },

    changeHandler: function () {
        // use ref to call the instance of Child
        this.refs[this.state.childRef].getChildValue();
    },

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// For Parent.js
var Parent = React.createClass({
    getInitialState: function () {
        return {
            changedValue: ""
        };
    },

    // the callback function for changing the text in <input type="text"></input>
    changeHandler: function (event) {

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// For Parent.js
var Parent = React.createClass({
    render: function () {
        return (
            <div><input onchange="" type="text" value="Parent"></input><child></child></div>
        );
    }
});

// For Child.js

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function debounce(func, wait, immediate) {
  var timeout;
  return function () {
    var obj = this, argus = arguments;
    function delayed () {
      if (!immediate) {
        func.apply(obj, argus);
      }
      timeout = null;
    }

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var timeout; 
var immediate = true; 
var wait = 500; 
$(window).resize(function () { 
  console.log("debounced"); 
  function delayed () { 
    if (!immediate) {
      //the operation needed 
    } 
    timeout = null; 

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var timeout; 
$(window).resize(function () {
  function delayed () {
    //the operation needed 
    timeout = null;
  }
  if (timeout) { 
    clearTimeout(timeout); 
  }
  timeout = setTimeout(delayed, 500); 

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(defn debounce-chan
  "Taken from https://github.com/swannodette/async-tests
   A little different with original one, write to channel after the interval
   instead of doing it in the beginning"
  ([source msecs]
   (debounce-chan (chan) source msecs))
  ([c source msecs]
   (go-loop [state ::init
             last-one nil
             cs [source]]

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lazy($(".castle").toArray()).map(mapFunc) 
.reduce(reduceFunc) 
.each(eachFunc);

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//show the length of $(".castle") 
> lazy($(".castle")).size() 
154 
//show the length of functions in $(".castle") 
> lazy($(".castle")).functions().size() 
145