//克隆对象
function CloneObj (obj) { var newObj = {} for(var prop in obj) { newObj[prop] = obj[prop] } return newObj; }
//去重
function Trim(arr) { var res = []; var json = {}; for(var i = 0; i < arr.length; i++) { if(!json[arr[i]]) { res.push(arr[i]); json[arr[i]] = 1; } } return res; }
//获取当前点的目标对象
function(point) { var res = document.elementFromPoint(point.x, point.y) return res; }
//URL参数 function Request(m) { var sValue = location.search.match(new RegExp("[\?\&]" + m + "=([^\&]*)(\&?)", "i")); return sValue ? sValue[1] : sValue; } function UrlUpdateParams (url, name, value) { var r = url; if(r != null && r != ‘undefined‘ && r != "") { value = encodeURIComponent(value); var reg = new RegExp("(^|)" + name + "=([^&]*)(|$)"); var tmp = name + "=" + value; if(url.match(reg) != null) { r = url.replace(eval(reg), tmp); } else { if(url.match("[\?]")) { r = url + "&" + tmp; } else { r = url + "?" + tmp; } } } return r; }
原文：https://www.cnblogs.com/wmwPro/p/9146550.html