窗体大小变化事件 resize js 230215

效果

窗体大小变化时触发

示例

var body = document.body
window.onresize = function () {
    console.log(window.outerWidth)
    if (window.outerWidth < 1000) {
        body.style.backgroundColor = "gold"
    } else {
        body.style.backgroundColor = "blue"
    }
}