使用XMLHttpRequest对象分为4部完成: 1.创建XMLHttpRequest组建 2.设置回调函数 3.初始化XMLHttpRequest组建 4.发送请求 实例代码: [javascript] var userName; var passWord; var xmlHttpRequest; //XmlHttpRequest对象 function createXmlHttpRequest(){ if(window.ActiveXObject){ //如果是IE浏览器
js代码模拟用户键盘鼠标输入 原生js var event = new Event('mousewheel'); event.wheelDelta = 360 document.dispatchEvent(event); jquery function simulateKeyPress(character) { // 方法1 jQuery.event.trigger({ type : 'keypress', which : character.charCodeAt(0) }); // 方法2 v
JS 回调函数,传参的办法. function uploadFile(t) { var fd = new FormData(); fd.append("_netLogo", document.getElementById('_netLogo').files[0]); var xhr = new XMLHttpRequest(); // 原来 xhr.upload.addEventListener("progress", uploadProgress, false);
var form=document.getElementById("formId"); var formData=new FormData(form); var oReq = new XMLHttpRequest(); oReq.onreadystatechange=function(){ if(oReq.readyState==4){ if(oReq.status==200){ var json=JSON.parse(oReq.responseText); console.log(j
我们都知道 js 是有onmousedown(鼠标按下事件)和onmouseup(鼠标抬起事件),刚开始我的思路是 鼠标抬起时间减去鼠标按下时间 var oDiv = document.getElementById('div1'); var timer1; var timer2; oDiv.onmousedown = function () { timer1 = new Date(); } oDiv.onmouseup = function () { timer2 = new Date(); v
需求来自于csdn问答,可以利用这个原理做秒杀抢单外挂. 代码示例如下: <html> <head> <meta charset="utf-8"/> <script type="text/javascript"> var count = 10; var sh; function counter(){ sh = setInterval(jishi,1000); } function jishi(){ var btn =