js实现选中的checkbox的值

function getSelectedIds(){var checkList = document.getElementsByName("selectKeyIds");if(checkList==null){return "";}var strSelectedIds = "";for(var i=0; i<checkList.length; i++){if(checkList[i].checked==true){strSelectedIds += checkList[i].value + ",";}}if(strSelectedIds.substring(strSelectedIds.length-1, strSelectedIds.length)==","){return strSelectedIds.substring(0, strSelectedIds.length - 1);}else{return strSelectedIds;}}

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