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                ??碼云GVP開源項目 12k star Uniapp+ElementUI 功能強大 支持多語言、二開方便! 廣告
                錯誤,與提示有所不同,將會中斷編譯器的下一步進程。基本上,它們中斷編譯并像堆棧跟蹤一樣在輸出流中顯示相關信息,這對調試很有幫助。因此,如果程序無法繼續執行就應該拋出錯誤。如有可能,嘗試解決這個問題并以顯示提醒的方式代替。 舉個例子,假設你創建了一個 getter 函數來從特定 map 中獲取值。如果想要獲取的值并不在 map 中,就可能會拋出錯誤。 ~~~ /// Z-indexes map, gathering all Z layers of the application /// @access private /// @type Map /// @prop {String} key - Layer’s name /// @prop {Number} value - Z value mapped to the key $z-indexes: ( 'modal': 5000, 'dropdown': 4000, 'default': 1, 'below': -1, ); /// Get a z-index value from a layer name /// @access public /// @param {String} $layer - Layer's name /// @return {Number} /// @require $z-indexes @function z($layer) { @if not map-has-key($z-indexes, $layer) { @error 'There is no layer named `#{$layer}` in $z-indexes. ' + 'Layer should be one of #{map-keys($z-indexes)}.'; } @return map-get($z-indexes, $layer); } ~~~
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