js常用整理

1、取随机整数 

Math.floor(Math.random(1-100)*100)

2、获取鼠标点击位置

//HTML
<button onclick="site(event)">获取鼠标点击位置</button>

//JS
function site(event){
    var x = event.clientX,
    var y = event.clientY;
    alert("X 座标: " + x + ", Y 座标: " + y);
}

3、获取按键Unicode码： 

//HTML
<button onkeyup="whichButton(event)">获取Unicode</button>

//JS
function whichButton(event){
    alert(event.keyCode)
}