abstract:<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>控制DIV样式</title> <style> #box{ width:200px; height:200px; background-color:&nbs
<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>控制DIV样式</title> <style> #box{ width:200px; height:200px; background-color: yellow; margin:20px 40px; } </style> </head> <body> <div id="box"></div> <input type="button" value="变高" onclick="changeHeight()"> <input type="button" value="变长" onclick="changeWidth()"> <input type="button" value="变色" onclick="changeColor()"> <input type="button" value="重置" onclick="changeSubmit()"> <input type="button" value="隐藏" onclick="changeDisplay_1()"> <input type="button" value="显示" onclick="changeDisplay_2()"> <script type="text/javascript"> var box; window.onload=function(){ box=document.getElementById("box") } function changeHeight(){ box.style.height="400px"; } function changeWidth(){ box.style.width="400px"; } function changeColor(){ box.style.backgroundColor="blue" } function changeSubmit(){ box.style.height="200px"; box.style.width="200px"; box.style.backgroundColor="yellow" } function changeDisplay_1(){ box.style.display="none"; } function changeDisplay_2(){ box.style.display="block"; } </script> </body> </html> 通过Id查找元素: document.getElementById("Id名") 注意拼写,如果拼写错误将找不到元素 改变CSS样式: box.style.background-color="red";是错误的,属性名要使用驼峰式写法 box.style.backgroundColor="red";
Correcting teacher:灭绝师太Correction time:2018-11-22 17:29:58
Teacher's summary:是的,注意事项要记清楚,不然有时会踩坑!继续保持