摘要:
<!DOCTYPE HTML><html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"><title>无标题文档</title><script>window.onload = function() { 阅读全文
摘要:
var arr1 = [ 1,2,3,4,5,6 ];// arr1.reverse();// alert( arr1 ); //怎么颠倒字符串呢? var str = 'abcdef';alert(str.split('').reverse().join('')); 阅读全文
摘要:
var arr1 = [ 1,2,3 ];var arr2 = [ 4,5,6 ];var arr3 = [ 7,8,9 ];alert( arr1.concat( arr2, arr3 ) ); 阅读全文
摘要:
// alert( Math.round(3.4) );// 0~1 : Math.round(Math.random());// 0~10// alert( Math.round(Math.random()*10) );// 5~10// alert( Math.round( Math.rando 阅读全文
摘要:
var arr = [ 1,2,3,4,5,6,7,8 ];arr.sort(function ( a, b ) { return Math.random() - 0.5;});alert( arr ); 阅读全文
摘要:
var arr = [ 'c', 'd', 'a', 'e' ];// arr.sort();// alert( arr );var arr2 = [ 4,3,5,5,76,2,0,8 ];// arr2.sort();// alert( arr2 );arr2.sort(function ( a, 阅读全文