js 获取自定义属性值

<p tid="1" onClick="change()">111</p>
<p tid="2" onClick="change()">111</p>
<p tid="3" onClick="change()">111</p>

function change(ev) {
var ev = ev || window.event,
    target = ev.target || ev.srcElement, 
    tid = target.getAttribute('tid');
console.log('tid',tid)
}