javascript学习笔记(十五) js间歇调用和超时调用

setTimeout( function () {
alert("你好!");
},1000);

var timeOutId = setTimeout( function () {
alert("你好!");
},1000);

clearTimeout(timeOutId);

setInterval( function () {
alert("你好!");
},1000);

var intervalId = null;
var span = document.createElement("span"); //创建span节点
span.Id="time"; //设置span的id
document.body.appendChild(span); //body内添加span
function incrementNumber () {
var now = new Date();
var timeStr = now.toLocaleTimeString();
span.innerText =timeStr;
num++;
if (num == 10) {
clearInterval(intervalId); //十秒后时间不变了
}
}
intervalId = setInterval(incrementNumber,1000);

var num = 0;
var max = 10;
function incrementNumber() {
num++;
if (numsetTimeout(incrementNumber,1000);
} else {
alert("OK");
}
}
setTimeout(incrementNumber,1000);