js默认选中checkbox

Question

window.onload = function () {
            var arr = "1,2,4";
            arr = arr.split(",");
            var inputs = document.getElementsByName("resumeFilter");
            for (var i = 0; i < arr.length; i++) {
                for (var j = 0; j < inputs.length; j++) {
                    if (arr[i] == inputs[j].value) {
                        inputs[j].checked = true;
                        break;
                    }
                }
            }
        }

Answer 1

html代码<input type="checkbox" name="resumeFilter" value="1" checked="true"/>
<input type="checkbox" name="resumeFilter" value="2"  checked="true"/>
<input type="checkbox" id="checkbox3" name="resumeFilter" value="3" />
<input type="checkbox" name="resumeFilter" value="4" />
JS代码var arr=3;
if(arr=3)
{
  $("#checkbox3").attr("checked","true");
}
效果

Answer 2

var s=document.getElementsByName("resumeFilter");
var arr="1,2";
var val=arr.split(",");
for(var str in val)
{
for(var i=0;i<s.length;i++){
if(str==s[i].value)
s[i].checked=true;
break;
}
}

Answer 3

jquery写法：
var arr="1,2";
var val=arr.split(",");
val.each(function(kry,valuel){
$("#resumeFilter[value='"+valuel+"']").attr("checked","true");
});

Answer 4

jquery写法：
var arr="1,2";
var val=arr.split(",");
val.each(function(kry,valuel){
$(":checkbox[value='"+valuel+"']").attr("checked","true");
});