我可以知道为什么我的div块没有显示?有人可以向我解释一下吗? https://jsfiddle.net/sw64j5qc/8/
function deviceSize() {
var myWidth = 0, myHeight = 0;
var block = document.getElementById("test");
if( typeof( window.innerWidth ) == 'number' ) {
//Non-IE
myWidth = window.innerWidth;
myHeight = window.innerHeight;
} else if( document.documentElement && ( document.documentElement.clientWidth || document.documentElement.clientHeight ) ) {
//IE 6+ in 'standards compliant mode'
myWidth = document.documentElement.clientWidth;
myHeight = document.documentElement.clientHeight;
} else if( document.body && ( document.body.clientWidth || document.body.clientHeight ) ) {
//IE 4 compatible
myWidth = document.body.clientWidth;
myHeight = document.body.clientHeight;
}
block.style.width = myWidth;
block.style.height = myHeight;
window.alert( 'Width = ' + myWidth );
window.alert( 'Height = ' + myHeight );
} deviceSize();
答案 0 :(得分:1)
您只是将数字传递给属性,而不是传递指定像素的字符串:
block.style.width = myWidth + "px";
block.style.height = myHeight + "px";
答案 1 :(得分:0)
您的div没有任何内容,如果您尝试
会发生什么<div id="test" style="background-color: #000;">Some content here</div>