<!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>我發(fā)現(xiàn) window.onload = function(){ var mybox = document.getElementsByTagName("li"); document.write('<xmp>'+mybox[0].innerHTML+'</xmp>'); alert(mybox[0].innerHTML); console.log(mybox[0].innerHTML); } 里面的三句話： document.write('<xmp>'+mybox[0].innerHTML+'</xmp>'); alert(mybox[0].innerHTML); console.log(mybox[0].innerHTML); 只有一句可以執(zhí)行document.write('<xmp>'+mybox[0].innerHTML+'</xmp>');為何執(zhí)行完 document.write('<xmp>'+mybox[0].innerHTML+'</xmp>'); 后面的兩句不執(zhí)行了？ alert(mybox[0].innerHTML); console.log(mybox[0].innerHTML);
為何只有一句可以執(zhí)行？
FFIVE
2019-03-21 18:19:48
