url取参数

function getparms(name) {
　　var regex = new RegExp("[?&]" + encodeURIComponent(name) + "\\=([^&#]+)");
　　var value = (location.search.match(regex) || ["", ""])[1];
　　if (value === 'undefined' || value === 'null') value = '';
　　return decodeURIComponent(value);
};