1. 选择所有

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function allChoose() {
    	var checkChoose = $("#allCheckbox");
    	var all = checkChoose.attr("checked");
	   	if (all) {
			var ch = $.find("input[type=checkbox]");
			$.each(ch,function(){
					$(this).attr("checked",true);
			});
	   	}
	   	else {
	   		var ch = $.find("input[type=checkbox]");
			$.each(ch,function(){
				$(this).attr("checked",false);
			});
	   	}
    }

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2. 得出选中后的值

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 function getChooseValue() {
    	
    	var chooseCheckbox = $.find("input[type=checkbox]");
    	var str = new String();
    	var length = chooseCheckbox.length;
    	var m = 0;
    	$.each(chooseCheckbox,function(index) {
    		if ($(this).attr("name") == "chooseReport"
    				&& $(this).attr("checked")) {
    			if (m != 0) {
    				str = str + ",";
    			}
    			m++;
    			str = str.concat($(this).val());
    		}
    	});
    	document.write(str);
    	document.close();
    	alert(str);
    
    }

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结果

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147976,147984,147986,147988,147990,147991

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