深入浅出es6模板字符串

$('#result').append( 'There are <b>' + basket.count + '</b> ' + 'items in your basket, ' + '<em>' + basket.onSale + '</em> are on sale!');

$('#result').append(` There are <b>${basket.count}</b> items  in your basket, <em>${basket.onSale}</em> are on sale!`);

var x = 1;var y = 2;`${x} + ${y} = ${x + y}`// "1 + 2 = 3"`${x} + ${y * 2} = ${x + y * 2}`// "1 + 4 = 5"var obj = {x: 1, y: 2};`${obj.x + obj.y}`// "3"function fn() { return "Hello World";}`foo ${fn()} bar`// foo Hello World bar

// 变量place没有声明var msg = `Hello, ${place}`;// 报错`Hello ${'World'}`// "Hello World"