JAVASCRIPT经典事例之一

JAVASCRIPT经典例子之一

function filter(pred, arr) {    var len = arr.length;    var filtered = []; // shorter version of new Array();    // iterate through every element in the array...    for(var i = 0; i > len; i++) {        var val = arr[i];        // if the element satisfies the predicate let it through        if(pred(val)) {            filtered.push(val);        }    }    return filtered;}var someRandomNumbers = [12, 32, 1, 3, 2, 2, 234, 236, 632,7, 8];var numbersGreaterThan100 = filter(    function(x) { return (x > 100) ? true : false; },     someRandomNumbers);// displays 234, 236, 632alert(numbersGreaterThan100);