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- componentWillUnmount: function(e) {
- var result = confirm('遷移してもよろしいですか?');
- if (!result) {
- // prevent unmount
- }
- },
- onUnload(event) {
- var result = confirm('遷移してもよろしいですか?');
- if (!result) {
- // prevent unmount
- }
- }
- componentDidMount() {
- window.addEventListener("beforeunload", this.onUnload)
- }
- componentWillUnmount() {
- window.removeEventListener("beforeunload", this.onUnload)
- }
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