html-js禁止右键菜单、复制粘贴等

<script type="text/javascript">
	//屏蔽右键菜单
	document.oncontextmenu = function(event) {
		if (window.event) {
			event = window.event;
		}
		try {
			var the = event.srcElement;
			if (!((the.tagName == "INPUT" && the.type.toLowerCase() == "text") || the.tagName == "TEXTAREA")) {
				return false;
			}
			return true;
		} catch (e) {
			return false;
		}
	}
	//屏蔽粘贴
	document.onpaste = function(event) {
		if (window.event) {
			event = window.event;
		}
		try {
			var the = event.srcElement;
			if (!((the.tagName == "INPUT" && the.type.toLowerCase() == "text") || the.tagName == "TEXTAREA")) {
				return false;
			}
			return true;
		} catch (e) {
			return false;
		}
	}
	//屏蔽复制
	document.oncopy = function(event) {
		if (window.event) {
			event = window.event;
		}
		try {
			var the = event.srcElement;
			if (!((the.tagName == "INPUT" && the.type.toLowerCase() == "text") || the.tagName == "TEXTAREA")) {
				return false;
			}
			return true;
		} catch (e) {
			return false;
		}
	}
	//屏蔽剪切
	document.oncut = function(event) {
		if (window.event) {
			event = window.event;
		}
		try {
			var the = event.srcElement;
			if (!((the.tagName == "INPUT" && the.type.toLowerCase() == "text") || the.tagName == "TEXTAREA")) {
				return false;
			}
			return true;
		} catch (e) {
			return false;
		}
	}
	//屏蔽选中
	document.onselectstart = function(event) {
		if (window.event) {
			event = window.event;
		}
		try {
			var the = event.srcElement;
			if (!((the.tagName == "INPUT" && the.type.toLowerCase() == "text") || the.tagName == "TEXTAREA")) {
				return false;
			}
			return true;
		} catch (e) {
			return false;
		}
	}
</script>

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*转载请注明出处：原文链接：https://cpp.vin/page/139.html