输入字段不能输入其他字符

我可以知道是什么错误导致我的输入字段无法输入字符吗？因为在输入字段中设置></\":*?|了这些符号限制后，其他字符无法在输入字段中输入。

<!DOCTYPE html>

<html>

<body>

<h1>Can't type character in the input field</h1>

</body>

</html>

function showError (key) {

var errBox = document.querySelector("#error-box");

errBox.textContent = "The character " + key.toString() + " is not allowed!";

//Dismiss the error

window.setTimeout(function () {

errBox.textContent = "";

}, 10000)

}

document.getElementById("function_code").onkeypress = function(e) {

var chr = String.fromCharCode(e.which);

if ("></\":*?|".indexOf(chr) >= 0)

showError(chr)

return false;

};

</script>

希望有人能帮我解决这个问题。谢谢。

绝地无双

浏览 110回答 2

2回答

人到中年有点甜

if ("></\":*?|".indexOf(chr) >= 0){  showError(chr)   return false;}return true // !!!<!DOCTYPE html><html><body><h1>Can't type character in the input field</h1><input type="text" class="form-control blank" id="function_code" name="function_code" title="function_code" onpaste="return false"><div id="error-box"></div></body></html><script>function showError (key) {  var errBox = document.querySelector("#error-box");  errBox.textContent = "The character " + key.toString() + " is not allowed!";  //Dismiss the error  window.setTimeout(function () {      errBox.textContent = "";  }, 10000)}document.getElementById("function_code").onkeypress = function(e) {var chr = String.fromCharCode(e.which);if ("></\":*?|".indexOf(chr) >= 0){  showError(chr)   return false;}return true};</script>

隔江千里

只需删除 return false; 或将其更改为 true如果您返回 false，则不会输入任何内容<!DOCTYPE html><html><body><h1>Can't type character in the input field</h1><input type="text" class="form-control blank" id="function_code" name="function_code" title="function_code" onpaste="return false"><div id="error-box"></div></body></html><script>function showError (key) {  var errBox = document.querySelector("#error-box");  errBox.textContent = "The character " + key.toString() + " is not allowed!";  //Dismiss the error  window.setTimeout(function () {      errBox.textContent = "";  }, 10000)}document.getElementById("function_code").onkeypress = function(e) {var chr = String.fromCharCode(e.which);if ("></\":*?|".indexOf(chr) >= 0)  showError(chr)};</script>

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