element.src.match("bulbon")什么作用?
2017-09-06 14:49
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<!DOCTYPE html> <html> <body> <script> function changeImage() { element=document.getElementById('myimage') if (element.src.match("bulbon")) { element.src="/i/eg_bulboff.gif"; } else { element.src="/i/eg_bulbon.gif"; } } </script> <img id="myimage" onclick="changeImage()" src="/i/eg_bulboff.gif"> <p>点击灯泡来点亮或熄灭这盏灯</p> </body> </html>
刚看看不明白,搜索了一下才明白,是检索的作用,检索该图片是不是bulbon,不是就切换。
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