<!DOCTYPE html><html><head> <meta charset="UTF-8"> <title></title> <script> window.onload = function(){ var mybox = document.getElementsByTagName("li"); document.write('<xmp>'+mybox[0].innerHTML+'</xmp>'); alert(mybox[0].innerHTML); console.log(mybox[0].innerHTML); } </script></head><body> <ul id="box"> <li><img src="image/i1.png" alt=""></li> <li><img src="image/i2.png" alt=""></li> <li><img src="image/i3.png" alt=""></li> </ul> </body></html>我发现 window.onload = function(){ var mybox = document.getElementsByTagName("li"); document.write('<xmp>'+mybox[0].innerHTML+'</xmp>'); alert(mybox[0].innerHTML); console.log(mybox[0].innerHTML); } 里面的三句话： document.write('<xmp>'+mybox[0].innerHTML+'</xmp>'); alert(mybox[0].innerHTML); console.log(mybox[0].innerHTML); 只有一句可以执行document.write('<xmp>'+mybox[0].innerHTML+'</xmp>');为何执行完 document.write('<xmp>'+mybox[0].innerHTML+'</xmp>'); 后面的两句不执行了？ alert(mybox[0].innerHTML); console.log(mybox[0].innerHTML);
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window.onload = function(){
var mybox = document.getElementsByTagName("li");
document.write('<xmp>'+mybox[0].innerHTML+'</xmp>');
alert(mybox[0].innerHTML);
console.log(mybox[0].innerHTML);
}
改写成
window.onload = function(){
var mybox = document.getElementsByTagName("li");
alert(mybox[0].innerHTML);
console.log(mybox[0].innerHTML);
document.write('<xmp>'+mybox[0].innerHTML+'</xmp>');
}
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