Example of Array valueOf() method : In this example I will show how to create a copy of an array. <!DOCTYPE html> <html> <body> <p>To make a copy of an array, click ...
JavaScript String valueOf() method : The valueOf() method is used to cast the string object to the primitive value. It doesn't change the original string.
JavaScript converts objects to primitive values by calling the valueOf method, and we rarely need to call the valueOf method ourselves. When an object with an expected primitive value is encountered, ...
很少需要自己调用valueOf方法；对象在某些情况下需要使用原始值参加运算，JavaScript后台会自动调用。 Object的原生内置对象 ...
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