underscore/underscore.html at master · iSAM2016/underscore · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Document</title>
     <!-- <script src="underscore.js"></script>  -->
   <!-- <script src="learn-underscore.js"></script> -->
   <script src="m.js"></script>
</head>
<body>
</body>
</html>
<script>
/*_.each(a, function(i,index,collection) {
  console.log(index)
},window)*/


/*  伪造数组方法
 var  eles = {
    length: 0,
    add: function(elem){
        Array.prototype.push.call(this,elem)
    },
    get: function(id){
        this.add(document.getElementById(id))
    },
    k: 0
 }

 eles.get( "id" )*/

/*var arr =_.map({one: 1, two: 2, three: 3},function(i){
  console.log(i)
});*/

/*var even = _.find([1, 2, 3, 4, 5, 6], function(num){ return num % 2 == 0; });

/*var even = _.find([1, 2, 3, 4, 5, 6], function(num){ return num % 2 == 0; });
*/

/*var k =_.every([2, 1, 3, 4], function(i){
  return i > 1;
});*/

/*console.log(_.some([0, -1,2], function(i){
  return i > 1;
}))*/

//console.log(_.contains({name: 'box'}, 'box'))

/*var result = _.groupBy([1.3, 2.1, 2.4], function(num){ return Math.floor(num);})
console.log(result)*/


//console.log(_.shuffle({name: 3,age:12, to:4}))
console.log(_.mapObject({start: 5, end: 12}, function(val, key) {
  return val + 5;
}))


/*console.log(_.shuffle({name: 3,age:12, to:4}))*/


</script>