zoukankan      html  css  js  c++  java
  • 常用函数

    new Date($scope.reg.birthday)=="Invalid Date"

    Angular 常用

    ng-repeat,ng-repeat-start,ng-repeat-end,ng-value,ng-init

    <p ng-repeat="itemSec in itemsub.orderOptionItems" ng-if="$index % 2 ==0" >
    <span ng-if="$index+0<itemsub.orderOptionItems.length">&nbsp;&nbsp;{{itemsub.orderOptionItems[$index+0].optionDetail |to_trusted}} </span>
    <span ng-if="$index+1<itemsub.orderOptionItems.length">&nbsp;&nbsp;{{itemsub.orderOptionItems[$index+1].optionDetail |to_trusted}}</span>
    </p>

    .filter('to_trusted', function(){
    return function(value) {
    var reg=new RegExp("<[^>]+>","g");
    if(!!value){
    return value.replace(reg,"");
    }else{
    return "";
    }

    }
    })

    .filter('abs', function () {
    return function(val) {
    return Math.abs(val);
    }
    })

    {{items.balance | abs | number:2 }}
    {{ aa |to_trusted}}

    return function(a, params) {

    if (params) {
    return $filter('filter')(a, params);
    } else {
    return [];
    }
    }
    <li ng-repeat='name in names | nonBlankFilter:q'> {{name}} </li>
    <input ng-model='q' />

    去重Array还有更简单

    function unique5(array){
      var r = [];
      for(var i = 0, l = array.length; i < l; i++) {
        for(var j = i + 1; j < l; j++)
          if (array[i] === array[j]) j = ++i;
        r.push(array[i]);
      }
      return r;
    }
    Array.prototype.unique3 = function () {
        // 构建一个新数组存放结果
        var newArray = [];
        // 创建一个空对象
        var object = {};
        // for循环时,每次取出一个元素与对象进行对比
        // 如果这个元素不重复,则将它存放到结果数中
        // 同时把这个元素的内容作为对象的一个属性,并赋值为1,
        // 存入到第2步建立的对象中
        for (var i = 0; i < this.length; i++){
            // 检测在object对象中是否包含遍历到的元素的值
            if(!object[typeof(this[i]) + this[i]]) {
                // 如果不包含,将存入对象的元素的值推入到结果数组中
                newArray.push(this[i]);
                // 如果不包含,存入object对象中该属性名的值设置为1
                object[typeof(this[i]) + this[i]] = 1;
            }
        }
        return newArray;
    }
    

    但在ES6去重还有更简单,更优化的方案,比如:

    // ES6
    function unique (arr) {
        const seen = new Map()
        return arr.filter((a) => !seen.has(a) && seen.set(a, 1))
    }
    // or
    function unique (arr) {
        return Array.from(new Set(arr))
    }

    auto-font-size:

    document.querySelector("#fitin span").style.fontSize="56px";
    /*alert(document.querySelector("#fitin span").offsetHeight);
    alert(document.querySelector("#fitin").offsetHeight); */
    setTimeout(function(){
    while( document.querySelector("#fitin span").offsetHeight >document.querySelector("#fitin").offsetHeight ) {
    document.querySelector("#fitin span").style.fontSize=(parseInt(document.querySelector("#fitin span").style.fontSize)-1)+"px"
    }
    }, 0);

    $(function() {
    $('#fitin div').css('font-size', '5em');
    while( $('#fitin div').height() > $('#fitin').height() ) {
    $('#fitin div').css('font-size', (parseInt($('#fitin div').css('font-size')) - 1) + "px" );
    $('div').css('font-size', (parseInt($('#fitin div').css('font-size')) - 1) + "px" );
    }

    });

    function isArray(e){
    var sign=false;
    if(!!a && a instanceof Array && a.length){
    sign=true;
    }
    return sign;
    }
    function isObject(e){
    var sign=false;
    if(!!a && a instanceof Object && !(a instanceof Array) && Object.keys(a).length){
    sign=true;
    }
    return sign;
    }

    a.sort();a.reverse(); var tempList=[{"a":"sx","order":"2"},{"a":"sx","order":"34"}];

    tempList.sort(function(a, b) {//顺序与倒离
    return a.order - b.order;
    });

    function stopBubble(event) { //停止冒泡
    var e = event || window.event;
    if (e && e.stopPropagation )
    e.stopPropagation();
    else
    window.event.cancelBubble = true;
    }

    function stopDefault(event) { //停止默认事件
    var e = event || window.event;
    if(e && e.preventDefault) {
     e.preventDefault();
    } else {
    window.event.returnValue = false;
    }
    return false;
    }

    function mytoFixed(object,num){
    if(!!parseFloat(object)){
    var tempnum = parseFloat(object).toFixed(num+4);
    return Number(Math.round(tempnum+'e'+num)+'e-'+num);
    }else{
    return 0;
    }
    };

    function toFixed(num, s) {
    var times = Math.pow(10, s)
    if(!!parseFloat(num)){
    var des = num * times + 0.5
    des = parseInt(des, 10) / times
    return des
    }else{
    return 0;
    }
    }

    var determineOrder=function(a,b){ //比较大小,-1,0,1
    var result=a.localeCompare(b);
    if(result<0){
    return -1;
    }else if(result>0){
    return 1
    }else{
    return 0;
    }
    }

    window.onload = function() {
    var el = document.getElementById("Test");
    if(window.addEventListener){
    el.addEventListener("click", handleMessage, false);
    }
    else{
    el.attachEvent("onclick", handleMessage);
    }

    function handleMessage(event) {
    event = event || window.event;
     console.log(event.target.getAttribute("aa"));
    }
    }

    var EventUtil = { 

        addHandler: function (element, type, handler) { 

          if(element.addEventListener) { 

            element.addEventListener(type, handler, false); 

          }else if (element.attachEvent) {

            element.attachEvent("on" + type, handler); 

          }else { 

            element["on" + type] = handler;

          } 

        }

       }; 

    if(!!window.navigator.onLine) {alert("首次 -- 已连接");}
    else { alert("首次 -- 未连接"); }

    EventUtil.addHandler(window, "online", function () { alert("Online"); }); 

    EventUtil.addHandler(window, "offline", function () { alert("Offline"); });

    function getCurrentStyle(ele,attr){


    if(document.defaultView){
    var style = document.defaultView.getComputedStyle(ele,null);
    return style ? style.getPropertyValue(attr): null;
    }else{
    return ele.currentStyle[attr];
    }
    }

    var test = document.getElementById('test');

    var style = getCurrentStyle(test,"background-color");

    alert(style);

    function setStyle(obj,css,sign){ //false 累加,true一次性加
    var appendStr="";
    for(var atr in css){
    if(!!sign){appendStr+=atr+":"+css[atr];}
    obj.style[atr] = css[atr];

    }
    if(!!sign) obj.style.cssText=appendStr;
    }
    var head= document.getElementById("head");
    setStyle(head,{"200px",height:"70px",display:"block"},false);

    console.log(getKeyValue("http://www.baiu.com?s1=3&n=s"))

    function getKeyValue(url) {
    var result = {};
    var reg = new RegExp('([\?|&])(.+?)=([^&?]*)', 'ig');
    var arr = reg.exec(url);

    while (arr) {
    result[arr[2]] = arr[3];

    arr = reg.exec(url);
    }

    return result;
    }

    <meta http-equiv="refresh" content="5;url=http://www.helloweba.com">
    function goWeb(){
    var aa = document.createElement("a");
    aa.setAttribute("href","http://www.helloweba.com");
    var bodys=document.getElementsByTagName("body")[0];
    bodys.appendChild(aa);
    aa.click();
    //window.location.href="http://www.helloweba.com";
    }

     url解:

    var ip=$location.host();
    var port=$location.port();
    var url=$location.search();
    var clientPort=url.port;

    =============CSS========= CSS  http://www.css3maker.com/border-radius.html http://www.htmllion.com/css-border-radius-tool.html

    display: flex;
    align-items: center; /*定义body的元素垂直居中*/ vertical-align:middle
    justify-content: center; /*定义body的里的元素水平居中*/ text-align:center

     box-sizing: border-box;

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  • 原文地址:https://www.cnblogs.com/jayruan/p/5246661.html
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