九九乘法表html四种写法,javascript输出四种九九乘法表

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"); } document.write("

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"); //第四种 //行 for( var i=9;i>=1;i-- ){ //打印空白 for( var j=1;j<=9-i;j++ ){ document.write(" "+i+"*"+j+"="+i*j+""+" ***"); } //打印乘法式子 for( var k=1;k<=i;k++){ document.write(""+" ***"); } document.write("
"); } document.write("

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