为函数自定义bind方法实例页面
HTML代码:
<input id="button" type="button" value="点击我" />
<span id="text">我会变色?</span>
JS代码:
if (!function() {}.bind) {
Function.prototype.bind = function(context) {
var self = this
, args = Array.prototype.slice.call(arguments);
return function() {
return self.apply(context, args.slice(1));
}
};
}
var eleBtn = document.getElementById("button")
, eleText = document.getElementById("text");
eleBtn.onclick = function(color) {
color = color || "#003399";
this.style.color = color;
}.bind(eleText, "#cd0000");
posted on 2015-12-29 14:23 zhangzongshan 阅读(438) 评论(0) 编辑 收藏 举报