.為什么將以下代碼中this，用sui[a]替換時(shí)，運(yùn)行不出效果；.代碼如下<!DOCTYPE html><html><head> <meta charset="UTF-8"> <title>Title</title> <style> .car{ background: #1dacbe; } </style></head><body><button>按鈕</button><button>按鈕</button><button>按鈕</button><button>按鈕</button><button>按鈕</button></body></html><script>var sui=document.getElementsByTagName("button");for(var a=0;a<sui.length;a++){ sui[a].onclick=function () { for(var b=0;b<sui.length;b++){ sui[b].className="" } this.className="car" }}</script>
關(guān)于JavaScript中“this”中的問(wèn)題
慕田峪4524236
2018-10-11 14:15:14
