WebRoot/js/cart.js

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/**
 * Created by an.han on 13-12-17.
 */
window.onload = function () {
    if (!document.getElementsByClassName) {
        document.getElementsByClassName = function (cls) {
            var ret = [];
            var els = document.getElementsByTagName('*');
            for (var i = 0, len = els.length; i < len; i++) {

                if (els[i].className.indexOf(cls + ' ') >=0 || els[i].className.indexOf(' ' + cls + ' ') >=0 || els[i].className.indexOf(' ' + cls) >=0) {
                    ret.push(els[i]);
                }
            }
            return ret;
        }
    }

    var table = document.getElementById('cartTable'); // 购物车表格
    var selectInputs = document.getElementsByClassName('check'); // 所有勾选框
    var checkAllInputs = document.getElementsByClassName('check-all') // 全选框
    var tr = table.children[1].rows; //行
    var selectedTotal = document.getElementById('selectedTotal'); //已选商品数目容器
    var priceTotal = document.getElementById('priceTotal'); //总计
    var deleteAll = document.getElementById('deleteAll'); // 删除全部按钮
    //var selectedViewList = document.getElementById('selectedViewList'); //浮层已选商品列表容器
    var selected = document.getElementById('selected'); //已选商品
    var foot = document.getElementById('foot');

    // 更新总数和总价格，已选浮层
    function getTotal() {
		var seleted = 0;
		var price = 0;
		var HTMLstr = '';
		for (var i = 0, len = tr.length; i < len; i++) {
			if (tr[i].getElementsByTagName('input')[0].checked) {
				tr[i].className = 'on';
				seleted += parseInt(tr[i].getElementsByTagName('input')[1].value);
				price += parseFloat(tr[i].cells[4].innerHTML);
				HTMLstr += '<div><img src="' + tr[i].getElementsByTagName('img')[0].src + '"><span class="del" index="' + i + '">取消选择</span></div>'
			}
			else {
				tr[i].className = '';
			}
		}
	
		selectedTotal.innerHTML = seleted;
		priceTotal.innerHTML = price.toFixed(2);
		//selectedViewList.innerHTML = HTMLstr;
	
		if (seleted == 0) {
			foot.className = 'foot';
		}
	}

    // 计算单行价格
    function getSubtotal(tr) {
        var cells = tr.cells;
        var price = cells[2]; //单价
        var subtotal = cells[4]; //小计td