iOS webView与javaScript如何交互?

Question

<div class="ui-loading-block " id="load">
<div class="ui-loading-cnt">

正在加载中...

</div>
</div>
<script>
if (/android/i.test(navigator.userAgent)) {
document.getElementById("load").className += " show";
window.appmethod.getPersonnleInfo('32', '1111');
}
location.href = 'Index';
</script>
以上是[webView stringByEvaluatingJavaScriptFromString:@"document.body.innerHTML"]的输出结果，现在应该怎样写js字段才能获取到32(admid)和1111(token)两个参数