【JavaScript】分享一个我自己写的小工具类！

              1
            function
             Alpha(){

              2
              3 console.log(‘alpha:hello‘);
  4  5this.lastclick = 0;
  6this.hideNode = {};
  7  8// 测试调用  9this.hello = function (){console.log(‘Hello, you called me.‘);}
 10 11// 返回包含数组中所有键名的一个新数组 12this.array_keys = function (arr) {
 13var RET = Array(), i = 0;
 14for (var key in arr) {RET[i] = key;i++;}
 15return RET;}
 16 17// 判断是否数组 18this.isarray = function (arg) {
 19if (arg === null) returnfalse;
 20if (typeof (arg) == "object") returntrue;
 21returnfalse;}
 22 23// 页面跳转 24this.gocpage = function (cpage) {
 25var ipage = document.getElementById(‘ipage‘);
 26if (empty(ipage)) ipage = parent.document.getElementById(‘ipage‘);
 27     ipage.setAttribute("src", cpage.id + ".html" + suffix());
 28function suffix() {return "?t=" + new Date().getTime();}}
 29 30// 若变量已存在、非空字符串或者非零，则返回 false 值；反之返回 true。 31this.empty = function (arg) {
 32if (arg === null) returntrue;
 33var argtype = typeof (arg);
 34switch (argtype) {
 35case "undefined":returntrue;
 36case "object":if (arg.length == 0) returntrue;returnfalse;
 37case "function":returnfalse;
 38case "boolean":if (arg === false) returntrue;returnfalse;
 39case "number":if (arg == 0) returntrue;returnfalse;
 40case "string":if (arg.length == 0) returntrue;returnfalse;
 41default:returnfalse;}}
 42 43// 隐藏自己 44this.hideself = function (node) {node.style.display = ‘none‘;}
 45 46// 域名验证 47this.vali_domain = function (str) {
 48var regdomain = /^[\w-]+\.[\w]+$|^[\w-]+\.[\w-]+\.[\w]+$|^[\w-]+\.[\w-]+\.[\w-]+\.[\w]+$/;
 49if (regdomain.test(str)) returntrue;
 50returnfalse;}
 51 52// 单击 vs 双击，传入2个回调函数，用户点击时自动触发 53this.clickcall = function (singleclick, doubleclick) {
 54var clicktime = new Date().getTime();
 55if (this.lastclick == 0) {
 56this.lastclick = clicktime;
 57         window.setTimeout(cc, 360);}
 58else { // 双击 59if ((clicktime - this.lastclick) < 300) {
 60this.lastclick = 0;
 61            doubleclick();}}
 62function cc() { // 单击 63if (this.lastclick == 0) returnfalse;
 64this.lastclick = 0;
 65        singleclick();}}
 66 67// 返回url参数对象 68this.geturlarg = function () {
 69var urlarg = new Object();
 70var t_urlarg = document.URL.split(‘?‘);
 71if (empty(t_urlarg[1])) returnnull;
 72var tt_urlarg = t_urlarg[1].split(‘&‘);
 73for (var i = 0; !empty(tt_urlarg[i]); i++) {
 74var ttt_urlarg = tt_urlarg[i].split(‘=‘);
 75if (empty(ttt_urlarg[0])) continue;
 76         urlarg[ttt_urlarg[0]] = empty(ttt_urlarg[1]) ? null : ttt_urlarg[1];}
 77return urlarg;}
 78 79// 鼠标覆盖 80this.mover = function (node) {node.style.background = ‘#CCCCCC‘;}
 81 82// 鼠标离开 83this.mout = function (node) {node.style.background = ‘#ffffff‘;}
 84 85// 获取字符串中的数字 86this.sel_num = function (str) {
 87var regnum = /\d+/;
 88var res = regnum.exec(str);
 89return res[0];}
 90 91// 计算2点间的距离 92this.cal_between = function (p1x, p1y, p2x, p2y) {return Math.sqrt(Math.pow(p1x - p2x, 2) + Math.pow(p1y - p2y, 2));}
 93 94// 计算区域的中心 95this.cal_center = function (l, t, w, h) {
 96var RES = new Object();
 97     RES[‘x‘] = l + w / 2;
 98     RES[‘y‘] = t + h / 2;
 99return RES;}
100101// ajax GET102this.get = function (url,callback){
103if(this.empty(url)){console.log(‘url is undefined‘);return;}
104if(this.empty(callback)){console.log(‘callback is undefined‘);return;}
105var xmlhttp;
106if (window.XMLHttpRequest) xmlhttp=new XMLHttpRequest();
107else xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
108     xmlhttp.onreadystatechange=function(){
109if(xmlhttp.readyState==4 && xmlhttp.status==200){
110             callback(eval(‘(‘ + xmlhttp.responseText + ‘)‘));}}
111     xmlhttp.open("GET",url,true);
112    xmlhttp.send();}
113114// ajax POST115this.post = function (url,callback,arg){
116if(this.empty(url)){console.log(‘url is undefined‘);return;}
117if(this.empty(callback)){console.log(‘callback is undefined‘);return;}
118var xmlhttp;
119if (window.XMLHttpRequest) xmlhttp=new XMLHttpRequest();
120else xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
121     xmlhttp.onreadystatechange=function(){
122if(xmlhttp.readyState==4 && xmlhttp.status==200){
123             callback(eval(‘(‘ + xmlhttp.responseText + ‘)‘));}}
124     xmlhttp.open("POST",url,true);
125     xmlhttp.setRequestHeader("Content-type","application/x-www-form-urlencoded");
126if(this.empty(arg)) xmlhttp.send();
127else xmlhttp.send(arg);}
128129// 隐藏body内的元素，呈现加载中130// 使用此方法需要加载 spin.js131this.loading = function(){
132var spinmaxheight = window.screen.height;
133var spinmaxwidth = window.screen.width;
134var spintop = spinmaxheight/2;
135var spinleft = spinmaxwidth/2;
136if (spintop>100) spintop = 100;
137var spinfooo = document.createElement(‘div‘);
138     spinfooo.id = ‘spinfooo‘;
139var spinfooop = document.createElement(‘div‘);
140    spinfooop.appendChild(spinfooo);
141     spinfooop.style.position = ‘absolute‘;
142     spinfooop.style.top = spintop + ‘px‘;
143     spinfooop.style.left = spinleft + ‘px‘;
144var opts = {
145         lines: 5,length: 12,width: 4,radius: 12,corners: 0.2,
146         rotate: 15,color: ‘#000‘,speed: 1.1,trail: 20,shadow: false,hwaccel: false,
147         className: ‘spinner‘,zIndex: 2e9,top: ‘auto‘,left: ‘auto‘};
148for(var i=0,tmp;;){
149         tmp = document.body.children[i];
150if (typeof(tmp) === ‘undefined‘) break;
151if (tmp.style.display == ‘none‘) continue;
152         tmp.style.display = ‘none‘;
153this.hideNode[i++] = tmp;}
154    document.body.appendChild(spinfooop);
155var spinner = new Spinner(opts).spin(spinfooo);}
156157// 呈现body内的元素，隐藏加载中158this.loaded = function(){
159for(var i=0;;i++){
160if (typeof(this.hideNode[i]) === ‘undefined‘) break;
161this.hideNode[i].style.display = ‘‘;}
162     document.getElementById(‘spinfooo‘).style.display = ‘none‘;}
163 }