function check(){ var arr = []; var obj = document.getElementsByTagName("input"); for(var i=0,j=obj.length; i < j; i ++) obj[i].checked && arr.push(obj[i]["id"]); alert(arr); }
function check(){ var arr = []; var obj = document.getElementsByTagName("input"); for(var i=0,j=obj.length; i < j; i ++){ if(obj[i].type.toLowerCase() == "checkbox"){ obj[i].checked && arr.push(obj[i]["id"]); } alert(arr); }
function check(){ var arr = []; var obj = document.getElementsByTagName("input"); for(var i=0,j=obj.length; i < j; i ++) /(checkbox)/i.test(obj[i].type) && obj[i].checked && arr.push(obj[i]["id"]); alert(arr); }
用jquery的查找办法: $(':checkbox[checked]')
function showCheckbox(){ $(':checkbox[checked]').each(function(){ alert(this.id); }); }
function check(){
var arr = [];
var obj = document.getElementsByTagName("input");
for(var i=0,j=obj.length; i < j; i ++)
obj[i].checked && arr.push(obj[i]["id"]);
alert(arr);
}
var arr = [];
var obj = document.getElementsByTagName("input");
for(var i=0,j=obj.length; i < j; i ++){
if(obj[i].type.toLowerCase() == "checkbox"){
obj[i].checked && arr.push(obj[i]["id"]);
}
alert(arr);
}
var arr = [];
var obj = document.getElementsByTagName("input");
for(var i=0,j=obj.length; i < j; i ++)
/(checkbox)/i.test(obj[i].type) && obj[i].checked && arr.push(obj[i]["id"]);
alert(arr);
}
$(':checkbox[checked]')
$(':checkbox[checked]').each(function(){
alert(this.id);
});
}