我这里有个奇怪的问题..我有一个指令,它只允许在输入文本框中使用字母。它在大多数情况下都工作得很好,只有一个例外。当我尝试编辑字符串的中间部分时,它会进行编辑,但控件会转到字符串的末尾,然后我必须再次将其放到要编辑的字符串位置。例如var test = 'abcdefg';当我更改除字母"g“之外的任何字母时,光标将移动到整个单词的末尾。我希望它在被更改的字母之后。任何帮助都将在下面的part指令代码中获得
link: function (scope, element, attrs, ngModel) {
if (!ngModel) return;
ngModel.$parsers.unshift(function (inputValue) {
var alphas = inputValue.split('').filter(function (s) { return (s.match(/[ A-Za-z\-']/g)); }).join('');
ngModel.$viewValue = alphas;
ngModel.$render();
return alphas;
});
}发布于 2016-05-11 19:34:04
不知道你是否已经解决了你的问题,但是我遇到了同样的问题,每次我在输入中间删除一个字符,它就会跳到输入的末尾。
关于你的代码,我不得不这样做
//Checks if the setSelectionRange method is available (not IE compatible)
//Otherwise use createTextRange() (IE compatible)
scope.setSelectionRange = function (input, selectionStart, selectionEnd) {
if (input.setSelectionRange) {
input.focus();
input.setSelectionRange(selectionStart, selectionEnd);
} else if (input.createTextRange) {
var range = input.createTextRange();
range.collapse(true);
range.moveEnd("character", selectionEnd);
range.moveStart("character", selectionStart);
range.select();
}
};
ngModelCtrl.$parsers.push(function (value) {
//Get the position the cursor was last at
var lastLetterPosition = element[0].selectionStart;
element.val($filter("uppercase")(value));
value = value.replace(/ /g, "").toLowerCase();
//I tried to do scope.$apply() to apply the change, but a digest cycle
//was already in progress, so scope.$evalAsync() adds the
//change to the end of the current digest cycle instead
//Manually set the position of the cursor to where the last position was
scope.$evalAsync(scope.setSelectionRange(htmlElement, lastLetterPosition, lastLetterPosition));
return value;
});希望这能有所帮助!
https://stackoverflow.com/questions/35563817
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