多项选择题
A.new Date(’2019-1-1’) B.new Date(’2019/1/1’) C.new Date(’2019,1,1’) D.new Date(’2019.1.1’)
var target = {}; var user = Object.assign(target, {name...
单项选择题
var target = {}; var user = Object.assign(target, {name:'lili',age:10,address:'山东'}, {age:18,name:'zs'}); console.log(target)以下打印的结果正确的是()
A.{name:"lili",age:10,address:"山东"} B.{name:"zs",age:18,address:"山东"} C.{name:"zs",age:18} D.{}
下列程序的输出是:()。 function Ball() { } Ball.prototype = { col...
下列程序的输出是:()。 function Ball() { } Ball.prototype = { colors:['green','yellow'] } var ball1 = new Ball() var ball2 = new Ball() ball1.colors.push('blue') console.log(ball2.colors)
A.[’green,’yellow’] B.[’green,’yellow’,’blue’] C.undefined D.以上都不对
var warp = document.getElementById("wrap");以下DOM操作存在语法正...
单项选择题var warp = document.getElementById("wrap");以下DOM操作存在语法正确的有()
A.wrap.innerHTML("HELLO WORLD"); B.wrap.style.background-image="img/bg.jpg" C.wrap.style.border="1px solid#f00"; D.wrap.width="200px";